Scientists have revealed the inner workings of the ozone hole that forms annually over Antarctica and found that declining chlorine in the stratosphere has not yet caused a recovery of the ozone hole.

From 2000 to 2010, about 1,900 cyclones churned across the top of the world each year, leaving warm water and air in their wakes — and melting sea ice in the Arctic Ocean. That’s about 40 percent more than previously thought, according to a new analysis of these Arctic storms.

After a year of observations, scientists waited with bated breath on Nov. 28, 2013, as Comet ISON made its closest approach to the sun, known as perihelion. Would the comet disintegrate in the fierce heat and gravity of the sun? Or survive intact

If there is any native forest in the vicinity, tree, fern and herbaceous species typical of these forests penetrate under the pine plantations without any need for action. That way it is possible, to a certain extent, for native forests to be restored, thanks to the process known as ecological succession.

Less than 20 miles from the site where melting ice exposed the 5,000-year-old body of Ötzi the Iceman, scientists have discovered new and compelling evidence that the Italian Alps are warming at an unprecedented rate. Part of that evidence comes in the form of a single dried-out leaf from a larch tree that grew thousands of years ago.

The uplift of two mountain ranges in Central Asia beginning 30 million years ago expanded the Gobi Desert and set Central Asia on its path to extreme aridity, a new study suggests.

The risk posed by tsunami waves generated by Canary Island landslides may need to be re-evaluated, according to researchers. New findings suggest that these landslides result in smaller tsunami waves than previously thought by some authors, because of the processes involved.

Evidence of an eruption 5,000 times larger than Mount St. Helens was found in the Utah desert, with traces of ash identified as far away as Nebraska. These supervolcanoes aren’t active today, but 30 million years ago more than 5,500 cubic kilometers of magma erupted during a one-week period near a place called Wah Wah Springs. By comparison, this eruption was about 5,000 times larger than the 1980 Mount St. Helens eruption.

Researchers have uncovered a vital clue about the mechanism behind a type of earthquake that originates deep within the Earth and accounts for a quarter of all temblors worldwide, some of which are strong enough to pose a safety hazard.

Results of a rapid response marine geophysical survey off Long Island following Hurricane Sandy show that despite the devastation on land, Sandy did not significantly disrupt the offshore barrier system that protects Long Island from long-term erosion. As a result, residents can rebuild with greater confidence the land will not begin to erode out from under them. The survey also found evidence of pollutants transferred to the offshore waters from Long Island’s south shore estuaries.

A groundbreaking study reveals that, if left unchecked, recent trends in the loss of forests to development will undermine significant land conservation gains in Massachusetts, jeopardize water quality, and limit the natural landscape’s ability to protect against climate change.

Tanzania has one of the fastest growing human populations in the world, and the number of conflicts between humans and other species is expected to rise as pressure on land areas grows.

The sensitivity of Earth’s climate to carbon dioxide could be double what has been previously estimated, according to geologists.