Earth

Some Greenland sharks alive today may have been contemporaries of Shakespeare. With a scarred heart that beats for centuries, this deep-sea shark defies age-related decline.

As wildfires blaze through Canada, air quality alerts are in place there and in parts of the US. Here are the profound ways wildfire smoke influences your physical and mental health.

For half a century, Gyaros was off-limits to the world as a military prison and naval firing range. Then came an astonishing photograph.

Humans have more in common with these elite ocean predators than often thought. A little Miles Davis anyone?

As climate change roasts cities around the world, history shows that air conditioning can be the difference between life and death for vulnerable people – but it comes at a cost.

As another heat dome descends on the US From planting trees to painting streets white, US cities are fighting extreme heat.

In the ocean's twilight zone, where the reach of the Sun fades to nothing, an epic migration begins every time night falls. It could also have an outsized effect on our climate.