1.75-billion-year-old fossils provide evidence of photosynthesis

Mass extinctions and evolutionary leaps, from bacteria to Homo sapiens

Where did life on Earth begin? That sounds like a relatively straightforward question. Surely life on Earth began… well, on Earth, right? We know this planet had the right conditions for life to arise

Two contrasting visions of humanity’s future in space

New data suggests that dark energy’s pulling power is changing Dark energy’s pull could be weakening over time, according to new results from the Dark Energy Spectroscopic Instrument (DESI) collaborat

Earth’s first crust looked surprisingly like today’s © ...

I’ve known since I was in school that oxygen – that defining molecule for life – is produced by plants in the presence of sunlight. But now, I’m not so sure. A recent discovery may have turned that fu