Nighttime drops in ocean oxygen raise energy use in small reef fish. Repeated stress could affect reef health as oceans warm.

It's no secret that Earth is doomed. Sure, there's the threat of climate change and the fact that sea levels are rising around the world. But that's not what we're talking about. Instead, our planet's ...

The Chesapeake Bay saw oxygen levels hit record lows this summer. That’s according to the hypoxia measurement, which is performed twice a month. Hypoxia happens when water has less than 2 mg/l of ...

The very air we breathe, composed of approximately 21% oxygen, is the lifeblood of our planet. It sustains everything from microscopic organisms to towering redwoods and, of course, humanity. But what ...

DENTON, Texas — Denton officials said a drop in oxygen killed fish in Unicorn Lake. Saturday, Denton's environmental services team assessed the dead fish at Unicorn Lake and determined the cause was ...

The Earth's magnetic field and oxygen evolved together over 540 million years, according to a major NASA study.

A dangerously low oxygen level—usually below 92%—can cause shortness of breath, confusion, chest pain, or fainting. It’s often triggered by lung or heart conditions like COPD, asthma, or heart ...

As Earth’s magnetic field has risen, so have the conditions that helped complex life to thrive — a discovery that could aid the search for life on distant planets. The strength of Earth’s magnetic ...

Shark sightings in the Sea of Marmara have been on the rise recently, with social media users sharing footage of sharks caught in fishing nets or spotted near beaches. Counterintuitively, this ...