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Upcoming Astrobiology Funding OpportunitiesJan. 28, 2018
The hazy atmosphere of the early Earth during the Archean lacked oxygen, possibly in part because of the slow rate of phosphorus recycling in the oceans.
Review of Sulfur Mass-Independent Fractionation on the Early EarthJan. 26, 2018
A small set of simple protein building blocks (left) likely existed at the earliest stages of life's history. Over billions of years, they were assembled and repurposed by evolution into complex proteins (right) that are at the core of modern metabolism.
The Legos of LifeJan. 25, 2018
The rolling landscape that surrounds Decorah, Iowa, hides a proposed Middle Ordovician impact structure.
Fossils from the Great Ordivician Diversification EventJan. 24, 2018
Physicist Peter Yunker and evolutionary biologist Will Ratcliff in Yunker's lab at Georgia Tech. Yunker holds a sample of nascent multicellular yeast clusters used in the experiments.
Saving Space to Lower Stress in the Evolution of MulticellularityJan. 18, 2018
Artist impression of the early Earth, where continental crust was below sea level and the only exposed land was in the form of volcanic islands.
NASA Fellowship Activity 2018Jan. 17, 2018
The scientific search underway for life beyond Earth requires input from many disciplines and fields. Strategies forward have to hear and take in what scientists in those many fields have to say.
Putting Together a Community Strategy To Search for Extraterrestrial LifeJan. 17, 2018
Artist impression of MAVEN's arrival at Mars.
Gravity Assist: Mars, with Bruce Jakosky and Michael MeyerJan. 16, 2018
Enchanced-color traverse section of martian icy scarps in late spring to early summer. Arrows indicate locations where relatively blue material is particularly close to the surface. Image taken by HiRISE camera on Mars Reconnaissance Orbiter.
The Mars Water Story Gets Ever More InterestingJan. 15, 2018
What the Moon may have looked like with an early magma ocean.
Loss of Volatile Elements in Planetary Magma OceansJan. 15, 2018
Dickinsonia costata, one of the most common species of the Ediacaran period, moved and fed on seafloor microbe mats. This specimen and its silly putty cast are about 6 centimeters across and from the Nilpena Station of South Australia.
Pond Scum Explains Evolution of First AnimalsJan. 11, 2018
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Ancient Records in the Ediacaran Doushantuo FormationJan. 8, 2018
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