Cooler spring weather does not equal a cooling climate

It's not uncommon to see pockets of unusually cold air in a warming world. Why? Because weather does not equal climate.

Alchemy, beautiful nature video

A tour of light and landscape in the American Southwest

Video: Strong winds pushed ice sheets ashore at Minnesota lake

Ice from Mille Lacs Lake reached doors and windows of homes at Izatys Resort on Saturday, May 11. Many described it as looking like a mini glacier.

6.0-magnitude earthquake struck southern Iran May 11

The May 11 earthquake epicenter was near the Persian Gulf, very far from Iran's capital city of Tehran. At least 15 killed.

Climate milestone: CO2 in Earth’s air tops 400 parts per million

It's the highest measurement of carbon dioxide in Earth's air since 1958. It's possible there has not been this much CO2 in our air in more than 3 million years.

In early May, unrest at several volcanoes

Several volcanoes erupted during the first week of May, 2013, including Mount Cleveland, the Mayon Volcano and Popocatépetl.

Water on moon, Earth come from the same source

Water inside the moon’s mantle came from primitive meteorites, new research finds, the same source thought to have supplied most of the water on Earth.

View from space: Before and after California’s Springs Fire

Before and after images from NASA Landsat of the Springs Fire in southern California, which began May 2 and was 80% contained by May 6.

World’s most extreme hearing animal: It’s a moth

The greater wax moth is capable of sensing sound frequencies of up to 300kHz – the highest recorded frequency sensitivity of any animal in the natural world.

Chilly start to May in U.S. Southeast

Temperatures have been well below average for the Southeast United States for the first half of May 2013. Here's why.