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Terrestrial Origins and Evolution
Nitrogen-mediated hydrogen bonds
Viewed: 74 times
02/12/13
The four nucleobases in DNA pairing up through nitrogen-mediated hydrogen bonds.
Viewed: 69 times
02/12/13
RNA lite?
Viewed: 70 times
02/13/13
Different species of the sea animals known as crinoids
Viewed: 67 times
02/19/13
cyanomethanimine
Viewed: 70 times
03/01/13

adenine
Viewed: 64 times
03/01/13
L-form bacteria cell division
Viewed: 63 times
03/04/13
L-form proliferation
Viewed: 62 times
03/04/13
Light quark mass determines
Viewed: 60 times
03/14/13
Will aliens need water in order to exist?
Viewed: 64 times
03/17/13

Spartobranchus tenuis from the Burgess Shale
Viewed: 62 times
03/20/13
Burgess Shale fossils
Viewed: 63 times
03/20/13
Spartobranchus tenuis illustration
Viewed: 71 times
03/20/13
Microbial mat and gene transfer
Viewed: 56 times
03/27/13
Triops cancriformis
Viewed: 55 times
04/03/13

The two enantiomers of alanine, D-Alanine and L-Alanine
Viewed: 59 times
04/09/13
Mystery of homochirality of amino acid
Viewed: 63 times
04/23/13
Pyrite-rich black shale outcrop
Viewed: 56 times
04/26/13
Pyrite-rich black shale
Viewed: 58 times
04/26/13
Outcrop of sulfide-rich black shale exposed at Earth’s surface
Viewed: 53 times
04/26/13

Asilisaurus
Viewed: 55 times
04/30/13
Fossilized remains
Viewed: 57 times
04/30/13
Fossils of an ancient microbial feast
Viewed: 56 times
05/01/13
3D reconstruction of tubular Gunflintia fossils
Viewed: 56 times
05/01/13
1,900 million year old Gunflint chert on the shores of Lake Superior
Viewed: 57 times
05/01/13

Primordial soup or sparkling water
Viewed: 52 times
05/20/13
Conflicting conclusions about the relatives of snails
Viewed: 56 times
05/28/13
Stromatolites near Shark Bay Australia
Viewed: 68 times
05/28/13
Spindle-like microstructures from the Farrel Quartzite, Western Australia
Viewed: 69 times
06/06/13
A cell’s DNA carries the instructions, or genes, to make the proteins that are needed to build cell structures and to perform necessary functions
Viewed: 157 times
06/18/13

Spiraling timescale chart of life on Earth.
Viewed: 88 times
06/23/13
A stromatolite on a large basalt clast from the Copper Harbor Formation on the Keweenaw Peninsula in Michigan
Viewed: 189 times
06/26/13
The Griqualand West Basin in the Northern Cape Province in South Africa
Viewed: 182 times
06/26/13
Besides bacteria living in the rock coatings, Kärkevagge is home to other wildlife.
Viewed: 163 times
06/26/13
Kärkevagge (which means "Valley of Boulders")
Viewed: 168 times
06/26/13

Manganese-enriched deposits in Koegas iron formation
Viewed: 270 times
06/26/13
Phylogenetic tree of life
Viewed: 286 times
07/24/13
A computer graphic of an RNA molecule
Viewed: 52 times
08/02/13
Glycophorin-A protein molecule
Viewed: 35 times
08/14/13
Artist's reconstruction of the head of the anomodont Dicynodon lacerticeps. Credit: Image by Marlene Donnelly, Field Museum of Natural History, Chicago
Viewed: 37 times
08/15/13

Reconstruction of the anomodont Diictodon
Viewed: 41 times
08/15/13
Skeleton of the cynodont Galesaurus planiceps. Credit: Image by Roger Smith, Iziko Museums of South Africa Social History / Natural History / Art Collections
Viewed: 32 times
08/29/13
Two juvenile skeletons of the cynodont Thrinaxodon liorhinus. Credit: Image by Photo credit Roger Smith, Iziko Museums of South Africa Social History / Natural History / Art Collections
Viewed: 32 times
08/29/13
Examples of spiral patterns
Viewed: 40 times
09/02/13
Spiral pattern in a membrane
Viewed: 77 times
09/02/13

Images illustrate the formation of a spiral pattern over a period during which the temperature decreases
Viewed: 91 times
09/02/13
An artist’s rendition of mastodons, camels and a ground sloth before the environmental changes of the Younger Dryas led to their extinction. Credit: Photo courtesy of Barry Roal Carlsen, University of Wisconsin
Viewed: 33 times
09/03/13
Pincers of the 350 million year old fossilized scorpion. Credit: University of the Witwatersrand, South Africa
Viewed: 27 times
09/03/13
The sting of the 350 million year old fossilized scorpion. Credit: University of the Witwatersrand, South Africa
Viewed: 25 times
09/03/13
Marine life during the Cambrian explosion (~520 million years ago).
Viewed: 30 times
09/15/13

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