College of Natural & Agricultural Sciences

EARTH.COM - Strange as it sounds, some scientists think the earliest life forms on Earth may have painted our planet in shades of purple rather than the green we see today. This idea, known as the Purple Earth hypothesis, suggests that single-celled organisms depended on a less complex molecule than chlorophyll to harness sunlight. NASA-supported...

THE DEBRIEF - On New Year’s Eve 2023, amid appearances by Joss Stone and Rod Steward on Jools Holland’s holiday ‘Musical Hootenanny’, a major 2024 revelation was alluded to: soon, we might learn that we aren’t alone in the universe. The insinuations that the discovery of alien life could be imminent all followed news from...

FORBES - Carbon Dioxide is often vilified as a bugaboo greenhouse gas. But its presence here on early earth is likely one of the reasons we are here to talk about it. Carbon dioxide, or CO2, was likely needed in large quantities in earth’s early atmosphere to raise temperatures sufficiently to enable the onset of...

THE U.S. SUN - Scientists have created a 3D illustration charting a list of nearby stars that may be hosting "habitable" alien worlds. They used data from NASA's Chandra X-ray Observatory to identify these planets. It involved finding stars that are close enough to Earth that we could use future telescopes to take images of...

LIVE SCIENCE - NASA's Chandra X-ray space telescope has created a three-dimensional map of stars close to the sun that may help astronomers search for alien planets that could host life. The map created by Chandra — which just celebrated 25 years in orbit but is facing a troubling budget crunch — could inform scientists...

ASTRONOMY - In a new study published in The Astrophysical Journal, astronomers propose looking for greenhouse gases in the atmospheres of exoplanets using tools like the James Webb Space Telescope (JWST). But rather than searching for an advanced species suffering the consequences of climate change, such gases might be a sign of something else: terraforming...

ANCIENT ORIGINS - While we have yet to identify life on any other planet or anywhere else in space, a new study has revealed the telltale signs which could indicate a planet being inhabited. Researchers at the University of California, Riverside (UCR) discovered that greenhouse gases, much like the ones emitted by our very own...