Researchers have found evidence of a titanic tussle between a terror bird and a large caiman in Colombia's ancient La Venta wetlands.

A new NASA analysis concludes that it is "reasonable to hypothesize" that living things could have formed the odd organic molecules discovered on Mars.

For the first time, astronomers have used a ground-based telescope to observe polarized microwave light from the universe's earliest epoch. Their observations could give them a better understanding of how…