Current carbon dioxide levels last seen 14 million years ago

The last time carbon dioxide in the atmosphere consistently matched today's human-driven levels was 14 million years ago, according to a large new study Thursday that paints a grim picture of where Earth's climate is headed.

Earth's billion-year balancing act

Branding seems like it's everywhere today. And it's not just the swoosh on your Nikes or the bitten apple icon on your laptop anymore. Social media influencers craft their personal brands. But is there even branding in science? ...

Astrophysical jet caught in a 'speed trap'

The science fiction author Arthur C. Clarke selected his own seven wonders of the world in a BBC television series in 1997. The only astronomical object he included was SS 433. It had attracted attention already in the late ...

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