Fires fueled spread of grasslands on ancient Earth

Ancient wildfires played a crucial role in the formation and spread of grasslands like those that now cover large parts of the Earth, according to scientists at Penn State and the Smithsonian National Museum of Natural History.

Image: Newborn stars blow bubbles in the Cat's Paw Nebula

This image from NASA's Spitzer Space Telescope shows the Cat's Paw Nebula, so named for the large, round features that create the impression of a feline footprint. The nebula is a star-forming region in the Milky Way galaxy, ...

Soot forensics: Carbon fingerprints reveal curved nanostructure

Researchers have moved one step closer to reducing air pollution from engines by imaging soot nanoparticles to reveal their unique signatures. The nanoparticle structures are like fingerprints, revealing curved fullerene-like ...

Oil biodegradation inhibited in deep-sea sediments

Degradation rates of oil were slower in the dark and cold waters of the depths of the Gulf of Mexico than at surface conditions, according to an international team of geoscientists trying to understand where the oil went ...

Simple swap for a greener toolkit

A metal catalyst that gives distinct carbon-based molecular skeletons upon ligand change may unlock cost-effective, green synthetic route

Substance that guides ant trail is produced by symbiotic bacteria

Researchers working on the Ribeirão Preto campus of the University of São Paulo (USP) in Brazil have discovered that a bacterium found in the microbiota associated with leafcutter ant species Atta sexdens rubropilosa produces ...

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