Earth.com

Oxygen-breathing life forms arrived on Earth much sooner than previously believed

Ancient enzymes show life’s nitrogen signal stayed unchanged for billions of years, helping scientists read early Earth.

Eco-friendly catalyst switches oxygen source based on particle size, study finds

As the climate crisis becomes a part of daily life with unprecedented heat waves and cold snaps, technology to effectively remove greenhouse gases is emerging as a critical global challenge. In ...

Life Learned To Breathe Oxygen Hundreds of Millions of Years Earlier Than Scientists Thought

Oxygen is everywhere on Earth today. But that hasn’t always been the case. Scientists think oxygen only became a lasting part ...
C&EN

Thermal Emission Spectroscopy of Single, Isolated Carbon Nanoparticles: Effects of Particle Size, Material, Charge, Excitation Wavelength, and Thermal History

Department of Chemistry, University of Utah, 315 S. 1400 E., Salt Lake City, Utah 84112, United States Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 ...

Aerobic respiration began hundreds of millions of years earlier than previously thought, study suggests

Oxygen is a vital and constant presence on Earth today. But that hasn't always been the case. It wasn't until around 2.3 ...

82-year-old ultramarathoner has the fitness level of a 20-year-old — what sets him apart

Now 82, López García is a world-record-holding ultramarathoner and the subject of a new study trying to figure out how he ...