The Keeling Curve Turns 50

The inception of the "Keeling Curve," a history of atmospheric carbon dioxide levels, marked a key moment in American science history. The record began in March, 1958 at a small observatory on the top of Hawaii's Mauna Loa.

Emperors of the Extreme

Emperor penguins can flourish in locales where few other animals roam. But scientists now wonder if they can adapt to a new threat: climate change.


A network devoted to recording the state of the oceans is nearing its full complement. Will it remain intact as its decades-long mission begins?

Saving Venice

The historic city calls upon Scripps and a multifaceted team of experts to help decipher the mysteries lying beneath its waters

History's Warming

An ancient global warming episode drastically changed the planet. Life on Earth needed 200,000 years to recover. What we're headed for in the next century could be even bigger.

The (Ralph) Keeling Curve

After two decades watching atmospheric oxygen levels drop, a Scripps researcher's conclusions about climate could leave one feeling light-headed