Planet Earth

The giant viruses might infect algae that are increasing Greenland's ice melt. These viruses could help kill off the damaging algal blooms, helping to reduce some of the impacts of climate change.

Rare earth elements are necessary for modern technology, including green energy, but they only come from a few sources around the globe. New research has discovered them hiding in coal mines in the U.S.

An unusual northern rātā tree that looks like it is striding across an empty field has been crowned New Zealand's Tree of the Year. The giant plant, which looks strikingly similar to an Ent from "The Lord of the Rings," is centuries old.

This 2018 astronaut photo shows the rust-colored waters of Madagascar's Betsiboka River winding through a complex series of mangrove islands. Both the river and islands have been altered in recent years by destructive human practices.

A reduction in sulfur dioxide emissions may have caused "80% of the measured increase in planetary heat uptake since 2020."

Like whale blubber, oil as a dominant source of energy will gradually be phased out over the next decades. Here's what that transition may look like.

A new proof-of-concept device trapped solar radiation and used it to heat an object to a blistering 1,800 degrees Fahrenheit (1,000 degrees Celsius), raising hopes that steel furnaces could be powered by solar energy.

While the push to reduce carbon dioxide emissions is spurring alternatives to petroleum in other sectors, phasing out plastic, particularly for medical applications, will be very tough.

We may never run out of oil, though known reserves are expected to last for about 50 years, current estimates suggest.

Europe's awakening Campi Flegrei volcano experienced its biggest seismic swarm in 40 years, with 150 earthquakes rocking the region in southern Italy in the evening of May 20.