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Science vs. Faith

Does water really have a memory?

Let's say you've gone back in time…

The Hubble Space Telescope

The IIS, the Earth and the Moon

Robot arm over Earth with sunburst

Space shuttle Endeavour (I)

Space shuttle Endeavour (II)

Phoenix spaceprobe descending to Mars on 25 may 2008

Milky Way

Milky Way and Jupiter

Barred spiral galaxy NGC1300

Galaxy system Arp-87

Galactic collision

Cluster of galaxies Abell 1689

Cluster of galaxies

Orion nebula

Carina nebula

Veil nebula

Homunculus nebula

God's eye nebula

God's hand nebula

Remnants of the supernova SN1006 (II)

The Pillars of Creation: star formation in the Eagle Nebula

Star formation in the Large Magellanic Cloud

The Cosmos Middle Finger: is God angry with us?

Constellation of Orion

How black holes swallow stars

The Sun

Spots on Sun's surface

Multiple visions of the Sun from the SDO spacecraft (I)

Multiple visions of the Sun from the SDO spacecraft (II)

Total solar eclipse

Sun's radiation spectrum

Asteroid Vesta from Dawn spacecraft

Asteroid Mathilde

Comets' pathway

Comets' tails (I)

Comets' tails (II)

Comet Halley in 1910

Comet Hale-Bopp

Comet Hale-Bopp and Aurora Borealis

Solar System's planets and dwarf planets

The rocky planets and some moons

The gaseous planets compared to the Earth

Venus near the Moon

Venus

Mars

Mars seen from the Rosetta spaceprobe

Sunset in Mars

Victoria crater in Mars, taken by the Opportunity rover

Water on Mars?

Mars' moon Phobos

Jupiter's atmosphere

Surface of Jupiter's moon Europa from the Galileo spaceprobe

Saturn seen from the Cassini spaceprobe (I)

Saturn seen from the Cassini spaceprobe (II)

2000 km across hurricane in Saturn's north pole, from the Cassini spaceprobe

Saturn's moon Rhea

Solstices and equinoxes

The Earth and the Moon

The Earth and the Moon from Mars

Earth setting down from the Moon

Impact crater in the Sahara Desert

A day in the arctic summer

The Moon

The Moon's phases

Total lunar eclipse

The periodic table of the chemical elements

Diagram of an atom of lithium

Structural representation of the molecule of ethanoic acid

Structural representation of the molecule of glycine

Atoms and molecules of the atmospheric air

Some common molecules

The molecules in the three states of matter

Chemical composition of the Earth's atmosphere

Structure of the Earth's atmosphere

Variations of temperature in the Earth's atmosphere

Atmosphere's density and pressure

Atmosphere's pressure and Torricelli's experiment

Water vapour in the Earth's atmosphere

Sun's radiation spectrum (I)

Sun's radiation spectrum (II)

Sun radiations in sunrise and sunset

Snow flakes

Snowflake increasingly magnified up to 36,000 times

Air circulation in the atmosphere

Common types of clouds

Hurricane Ike from the International Space Station

Karman vortices over the Pacific ocean

Anatomy of a tropical cyclone

Molecules of water

Compartments of the Hydrosphere

Diagram of the water cycle (I)

Diagram of the water cycle (II)

Diagram of the water cycle (III)

Lakes and rivers under the Antarctica ice sheet

Atmospheric water vapour

Average seawater temperature

Diagram of the surface oceanic currents, with their roles

Oceanic heat conveyor belt

Moon's pull upon the tides

Spring tides and neap tides

The interior of the terrrestrial planets

Earth's cutaway

The structure of a continental margin

Pyrite structure

Diamond structure

Pyrite growth habit

Main crystal growth habits

Amber with insect

Obsidiane

Native gold

Native silver

Rough diamond

Graphite

Sulphur

Pyrite dodecahedral aggregate

Cinnabar

Sphalerite

Magnetite octahedral aggregate

Hematite

Limonite

Corundum (rough ruby)

Halite

Fluorite

Calcite

Aragonite acicular aggregate

Aragonite twinning

Azurite and acicular malachite

Malachite

Fibrous gypsum

Desert rose gypsum

Rock crystal quartz

Milk quartz

Citrine quartz

Rose quartz

Amethyst quartz

Orthoclase

Biotite

Muscovite aggregate

Beryl

Garnet

Talc

Staurolite cross twinning

The rocks cycle

Sandstone

Mudstone

Fossiliferous limestone

Diorite

Grey granite

Basalt

Micaceous schist

Banded gneiss

Marble

Quartzite

Bacterian morphologies and arrangements

Bacterian culture in agar plate

Colonies of Streptococcus mutans

Bacillus anthracis with white blood cells

Helicobacter pylori showing flagella

Benthic foraminifera

Trypanosoma between red blood cells

Coccosphere stage of an haptophyte alga

Colony of a a golden alga

Colonies of green algae

Multicellular green algae

Spirogyra, a filamental green alga

Corallina officinalis, a coralline red alga

Macrocystis, a brown alga

Sargassum, a brown alga

Plant environmental benefits

Flower parts

Simple leaf parts

Leaf shapes

Leaf margins

Leaf venations

External stem anatomy

External root anatomy

Lunularia, a liverwort

Anthoceros, a hornwort

Equisetum, a horsetail

Spore forming strobilus of Equisetum

Maritime pine (Pinus pinaster)

Stone pine (Pinus pinea) - Bark

Stone pine (Pinus pinea) - Leaves

Stone pine (Pinus pinea) - Expanding shoot in spring

Stone pine (Pinus pinea) - Closed female cone

Stone pine (Pinus pinea) - Open female cone

Pinecone opening

Stone pine (Pinus pinea) - Scale from female cone

Norway spruce (Picea abies)

Norway spruce (Picea abies) - Open female cone

Lebanon cedar (Cedrus libani)

Atlas cedar (Cedrus atlantica)

Atlas cedar (Cedrus atlantica) - Foliage and female cone

Atlas cedar (Cedrus atlantica) - Foliage and male cones

Mediterranean cypress (Cupressus sempervirens): scale-like leaves and cones

Common juniper (Juniperus communis): needle-like leaves and cones

Sequoiadendron: the General Grant tree

Gingko biloba (I)

Gingko biloba (II)

Beech (Fagus sylvatica) - Foliage

Beech (Fagus sylvatica) - Leaves and beechnuts

Pedunculate oak (Quercus robur)

Pyrenean oak (Quercus pyrenaica)

Cork oak (Quercus suber) - Leaves

Cork oak (Quercus suber) - Harvested bark

Black poplar (Populus nigra)

Black poplar (Populus nigra) - Leaves

Black poplar (Populus nigra) - Burrs on bark

White poplar (Populus alba) - Leaves and catkins

White poplar (Populus alba) - Leaves

Common aspen (Populus tremula) - Leaves (II)

Weeping willow (Salix sepulcralis)

Weeping willow (Salix sepulcralis) - Leaves and catkins

White willow (Salix alba) - Leaves

White willow (Salix alba) - Catkin

Narrow-leafed ash (Fraxinus angustifolia) - Leaves

European ash (Fraxinus excelsior) - Leave

Silver Birch (Betula pendula)

Silver Birch (Betula pendula) - Leaves

Silver Birch (Betula pendula) - Leaves and catkin

Silver Birch (Betula pendula) - Bark

Wych elm (Ulmus glabra)

European white elm (Ulmus laevis)

Box elder maple (Acer negundo)

Norway maple (Acer platanoides)

London plane (Platanus x hispanica) (I)

London plane (Platanus x hispanica) (II)

Common privet (Ligustrum vulgare)

Black mulberry (Morus nigra)

Mimosa (Acacia dealbata) (II)

Common dogwood (Cornus sanguinea) (I)

Common dogwood (Cornus sanguinea) (II)

Cnidarians: jellyfish and polyps

Anatomy of a jellyfish

Cross section of a jellyfish

Jellyfish cycle (I)

Jellyfish cycle (II)

Polyp tree colony

Soft coral

Common housefly

Ant walking

Ascidia, a tunicate

Branchiotoma lanceolatum, a cephalochordate

Sea lamprey

Lampreys attached to a trout

Parts of a bird

Barn swallow (II)

Barn swallow (III)

Common swift (I)

Common swift (II)

Echidna (I)

Echidna (II)

Kangaroo

Panda bears

Total primary energy supply by energy source

Uses of petroleum

Nuclear fission

Nuclear fission chain reaction

Hydroelectric dam

Cooling towers of a power plant

Steam turbine rotor

The temperature of a body depends on the motion of its particles

Sun's radiation spectrum (I)

Sun's radiation spectrum (II)

Sun's radiation spectrum (III)

Visible spectrum

Reflection

Refraction (I)

Refraction (II)

Refraction of a white beam of light through a prism (I)

Refraction of a white beam of light through a prism (II)

Light microscope (I)

Light microscope (II)

Properties of waves

pH scale

Basic photosynthesis diagram

Feeding adaptations in bird beaks

Tawny owl pellet

Positive thigmotropism in bean's tendrils

Thigmonasty in Dionaea muscipula (I)

Thigmonasty in Dionaea muscipula (II)

Thigmonasty in Mimosa pudica

Bird of Paradise seed

Vegetative propagation: grafting

Vegetative propagation: runners (stolons)

Vegetative propagation: runners (stolons) in the lipstick strawberry

Vegetative propagation: tubers

Drylands

Glucose, a monosaccharide

Cellulose, a polysaccharide

Alanine, an aminoacid

Hemoglobin, a protein

RuBisCO, a protein

Protein structural levels

Arachidic acid, a fatty acid.

DNA structure (I)

DNA structure (II)

DNA structure (III)

DNA structure (IV)

Robert Hooke's drawing of a cork

Root hair cell

Human liver cells

Structure of a prokaryiotic cell

Structure of an eucaryotic animal cell (I)

Structure of an eucaryotic animal cell (II)

Structure of an eucaryotic plant cell

Animal cell (blank) (I)

Anlam cell (blank) (II)

Neurone (blank)

Plant cell (blank)

Structure of the cell membrane

Structure of a mitochondrion (I)

Structure of a mitochondrion (II)

Mitochondria under the electron microscope

Structure of a chloroplast

Chloroplasts (I)

Chloroplasts (II)

Structure of the Golgi apparatus

Golgi apparatus under the electron microscope

Vesicle transport system (I)

Vesicle transport system (II)

The nucleus and the rER

DNA packaging in a cell

Human chromosomes in metaphase

Tissues of a plant's leaf

Main human tissues

Human connective tissues

Epithelial tissues in hominids

Compact bone

Levels of organisation in the humang being

Human body regions

Human body planes

Digestive system organs (I)

Digestive system organs (II)

Gastric epithelium

Duodenum wall

Intestinal villi

Vermiform appendix of the large intestine

Human breathing movements

The ribcage

Human respiratory system (I)

Human respiratory system (II)

Human lungs in detail

Bronchiolar epithelium (II)

Alveoli and capillaries

Gas exchange through alveoli

Red blood cells (I)

Red blood cells (II)

Red blood cells (III) Sickle-cell anaemia

Squeezed red blood cells in ruptured capillary

Platelets

Air-hardened albumin crystals from blood clot

Chambers of the heart

Chambers, valves, arteries and veins of the heart (I)

Chambers, valves, arteries and veins of the heart (II)

Blood vessels

Blood pulmonary and systemic circuits

Arteries of the human body

Veins of the human body

Arteries and veins of the human body

The kidneys from behind

The urinary system

Anatomy of a kidney

Anatomy and location of a nephron

Structure of the renal corpuscle of a nephron

The function of the nephron

How soft drinks affect your health

Neurone

Neurones with glial cell (astrocyte) under the electron microscope

Drawing by Ramón y Cajal of neurones (1899)

Different types of neurones

Motor neurone

Sensory neurone

Bundles of axons

Neurone and synapse

Structure of a synapse

The synapse under the electron microscope

Structure of a nerve

Myelin sheath of a neurone

Structure of the Nervous System (I)

Structure of the Nervous System (II)

Concepts map on the Central Nervous System

Whole brain

Brain cross sections

Parts of the brain in sagittal section (I)

Parts of the brain in sagittal section (II)

Cerebral cortical lobes and functions

Section of the spinal cord

Structure and functions of the Autonomic Nervous System

Structure of the eye (I)

Structure of the eye (II)

Sensory cells of the retina: cones (yellow) and rods (white)

Cross section of the iris

Myopia and hyperopia

Structure of the ear (I)

Structure of the ear (II)

Structure of the ear (III)

Taste buds

Olfactory cells of the nasal cavity's mucosa

Endocrine organs in humans (I)

Endocrine organs in humans (II)

The hypothalamus and the pituitary gland

Positive feedback in the endocrine system

Negative feedback in the endocrine system

Hormones involved in hunger

Anterior muscles of the human body

Posterior muscles of the human body

Muscle attached to bone by a tendon

Tendons and ligaments

The human skeleton (front)

The human skeleton (back)

The human skull (front)

Male reproductive system (I)

Male reproductive system (II)

Male reproductive system (III)

Male reproductive system (IV)

Male reproductive system (V)

Male reproductive system (VI)

Vasectomy

Female reproductive system (I)

Female reproductive system (II)

Female reproductive system (III)

Female reproductive system (IV)

Female reproductive system (V)

Development of the endometrium

Development of a follicle (I)

Development of a follicle (II)

Development of a follicle and of the endometrium

Hormonal control of the menstrual cycle

Estradiol crystals

Egg and sperms (I)

Egg and sperms (II)

Egg and sperms (III)

Sperm (I)

Sperm (II)

Sperm production in the seminiferous tubules

Ovulation

Fertilization

Ovulation, fertilization and implantation (I)

Ovulation, fertilization and implantation (II)

Ovulation, fertilization and implantation (III)

First stages of the embryonic development

Embryonic development up until implantation

Embryonic development in the first 60 days

Morula

5 weeks embryo

9 months fetus

Development of the face of a human fetus

Good news

White blood cell and bacteria

Macrophage gobbling a spirocheta

Pyrite structure

Diamond structure

Graphite structure

Pyrite growth habit

Main crystal growth habits

Native gold

Rough diamond

Graphite

Sulphur

Pyrite dodecahedral aggregate

Cinnabar

Sphalerite

Magnetite octahedral aggregate

Hematite

Limonite

Corundum (rough ruby)

Halite

Fluorite

Calcite

Aragonite acicular aggregate

Aragonite twinning

Dolomite

Siderite

Magnesite

Azurite and acicular malachite

Malachite

Celestine

Anhydrite

Fibrous gypsum

Desert rose gypsum

Rock crystal quartz

Milk quartz

Citrine quartz

Rose quartz

Amethyst quartz

Orthoclase

Biotite

Muscovite aggregate

Beryl

Tourmaline

Garnet

Talc

Chlorite

Staurolite cross twinning

Amber with insect

Obsidiane

Breccia

Sandstone

Siltstone

Mudstone

Weathered limestone

Chalk

Peat

Lignite

Bituminous coal

Anthracite

Peridotite

Diorite

Gray granite

Red granite

Syenite

Porphyry

Basalt

Basaltic volcanic bomb

Pumice

Obsidiane

Marble

Quartzite

Hornfels

Phyllite

Micaceous schist

Banded gneiss

Augen gneiss

Migmatite

The rock cycle

Osmotic pressure on plant cells

Osmotic pressure on blood cells

Types of endocitosis

Enzymatic action

Diagram of the mitosis (I)

Diagram of the mitosis (II)

The mitosis under the light microscope

Fluorescent micrograph of the cell in metaphase

Human male karyotype

Codominance

Independent assortment and segregation of alleles in meiosis

Double-stranded DNA: the double helix (I)

Double-stranded DNA: the double helix (II)

DNA_ds base pairing (I)

DNA_ds base pairing (II)

Gene, DNA and chromosome

Single chromosome mutations

Two chromosome mutations

Genetic manipulation: making recombinant DNA (I)

Genetic manipulation: making recombinant DNA (II)

Genetic manipulation: making sticky ends

Animal cloning by nuclear transfer (I)

Animal cloning by nuclear transfer (II): Dolly the sheep

The voyage of the Beagle

Darwin's first evolutionary tree

Recombination by independent segregation of chromosomes in meiosis

Recombination by crossing over in meiosis (I)

Recombination by crossing over in meiosis (II)

Evolutionary change in the peppered moth

Natural selection of peppered moth for dark coloration

Natural selection of antibiotic-resistant bacteria

Types of speciation by cladogenesis

Speciation by geographic isolation: Darwin's finches

Caricature of Darwin as an ape

Intelligent Design

Why is the fossil record gappy and uneven?

Artistic depiction of the protoplanetary disk

Artistic depiction of the process of accretion in the protoplanetary disk

Acasta gneiss (I)

Acasta gneiss (II)

Earth's ice through geologic time

Earth's clock

Fossil stromatolites

Filamentous cyanobacteria

Depiction of Ediacaran life forms

Anatomy of trilobites

Cruziana, trackways of trilobites (I)

Cruziana, trackways of trilobites (II)

Reconstruction of an ammonite

Large ammonite fossil

Iridiscent ammonite fossil

The truth about dinosaurs

Fossil of Archaeopteryx (II) with impressions of feathers

Fossil of Archaeopteryx (III) with impressions of feathers

Replica of an Archaeopteryx skeleton

The crater of Chicxulub

Phylogenetic tree of Primates

Hominoids' skeletons

Phylogenetic tree of Hominines (I)

Phylogenetic tree of Hominines (II)

Phylogenetic tree of Hominines (III)

Pelvic girdle in hominines

Paranthropus boisei (I)

Paranthropus boisei (II)

Lucy (Australopithecus afarensis)

Reconstruction of the skull of Australopithecus afarensis

Turkana boy (Homo ergaster)

Incomplete skull of Homo antecessor from Atapuerca (Spain)

Archaic Homo sapiens (Cro-Magnon)

Comparison between H. sapiens and H. neanderthalensis skulls

Leaf anatomy

Cross section of a leaf (I)

Cross section of a leaf (III)

Stomata (I)

Stomata (III)

Stomata (IV)

Internal root anatomy

Cross section of a root

Internal stem anatomy

Vascular bundles of the stem

Xylem

Water movement in plants

Flowering spike of a meadow foxtail

Pine pollen grain

Types of buds

Trophic chains

Trophic web

Carbon cycle (I)

Carbon cycle (II)

Nitrogen cycle (I)

The flow of the Sun's radiation across the Earth (I)

The flow of the Sun's radiation across the Earth (II)

Variation of temperatures in the last 130 years

Records of monthly temperatures in the last 130 years

Variation of temperatures between 1979 and 2008

Main sources of CO₂ emissions

Annual greenhouse gas emissions by sector

Seasonal melting of the Greenland ice sheet

Measures to cool down the Earth

Worldwide consumption of CFCs and HCFCs

Causes and consequences of acid rain

Acid rain damaged wood

Acid rain damaged monument

The most dangerous species in the Mediterranean sea

Accumulation of DDT through the food chains

Land use before and after humans

Ecoregions status

Extinction hotspots

How would the Earth change if Mankind died off?

Earth's cutaway

Convection currents in the Asthenosphere

Prominent hotspots (I)

Prominent hotspots (II)

Heat flow in the Geosphere

The structure of a volcano

Mount Egmont volcano in New Zealand

Volcanic landscape in Saudi Arabia

Hawaii archipelago

Mons Olympus volcano in Mars

The Pacific Ring of Fire

Map of volcanoes

Map of earthquakes

Map of earthquakes epicenters in the past decades

Quakes in the Kuril-Kamchatka Trench

Types of seismic waves

Diagram of the formation of a tsunami

Water retreatment in the coast of Sri-Lanka before the tsunami

The opening of the Atlantic Ocean according to Antonio Snider-Pellegrini in 1858

Pangaea

Blank map of the tectonic plates

Earth's map showing the oceanic relief

Oceanic relief in the northern Pacific

The structure of a continental margin

Types of tectonic boundaries

Divergent tectonic boundary in Iceland

Convergent tectonic boundary between two continental plates

Convergent tectonic boundary between two continental plates: the Himalayas

Convergent tectonic boundary between an oceanic and a continental plate

Marianas trench

Bathyscaphe Trieste

Convergent tectonic boundary between an oceanic plate and a mixed plate

Transform boundary in the San Andreas fault

Peridotite

Diorite

Grey granite

Red granite

Syenite

Pegmatite

Porphyry

Andesite

Basalt

Pumice

Obsidiane

Phyllite

Micaceous schist

Banded gneiss

Augen gneiss

Marble

Quartzite

Sand dunes in the Arabian Empty Quarter

The formation of glacial ice from snow

West fjords in Iceland

Ice cap in Iceland

Tongue of the Malaspina Glacier in Alaska

U-shaped glacial valley

Cirque glacier (I)

The formation of a waterfall

Gorge and waterfalls

V-shaped river valley

Meanders

Meander in the river Duero, Spain

Meander in the river Meuse, France

Meanders in the river Cauto, Cuba

Dry river channel and alluvial fan in Iran

Ganges river delta

River Ebro delta

Coastal landforms

Breccia

Sandstone

Siltstone

Mudstone

Weathered limestone

Chalk

Flysch de Zumaia (III)