May Puzzler

May Puzzler

Update on June 4, 2024: This image shows greenhouses in eastern China. Congratulations to James Varghese for being the first to correctly identify the feature and its location. Read more about the area in “A Greenhouse Boom in China.” How to answer. You can use a few words or several paragraphs. You might simply tell us the location, or … Read more

Citizen Scientists Capture Brilliant Photos of the Aurora

Citizen Scientists Capture Brilliant Photos of the Aurora

On May 11, 2024, the day-night band of VIIRS (Visible Infrared Imaging Radiometer Suite) on the Suomi NPP satellite spotted the aurora borealis over the United States during the strongest geomagnetic storm in over two decades. That same night, observers on the ground captured spectacular photographs of the dazzling light. The following photos represent just a handful … Read more

April Puzzler

April Puzzler

Update on May 21, 2024: This image shows a phytoplankton bloom in the Gulf of Oman. It was acquired on March 17, 2024, less than two months after the launch of NASA’s PACE (Plankton, Aerosol, Cloud, ocean Ecosystem) satellite. Congratulations to Dan Taylor for being the first to correctly identify the bloom and its location. Special mention … Read more

March Puzzler

March Puzzler

Update on April 23, 2024: This image shows Sortebræ, a large surge-type glacier in eastern Greenland, on September 6, 1986. Congratulations to Steward Redwood for being the first to correctly identify the glacier. Read more about the glacier and see how it has retreated in recent decades in our Image of the Day story. Every month … Read more

Eclipse Challenge: Clouds and Our Solar-Powered Earth

Eclipse Challenge: Clouds and Our Solar-Powered Earth

Energy from the Sun warms our planet, and changes in sunlight can also cause changes in temperature, clouds, and wind. Clouds are ever changing and give you clues and information on what is happening in the atmosphere. Clouds can tell you if air is moving vertically (or upward) when you see cumulus type clouds growing … Read more

February Puzzler

February Puzzler

Update on March 11, 2024: This image shows Spirit Lake, located in south-central Washington, on April 26, 2023. Congratulations to Ivan Kordač for being the first to correctly identify the lake. Special mention goes to David Sherrod, who pointed out the lake’s floating log raft and mentioned a recent debris flow in the region (which … Read more

Create ‘positive tipping points’ with climate mandates, governments urged

Requiring key sectors to switch to clean energy by specific times could trigger benevolent cascades, report claims In the terminology of the climate and ecological crises the phrase “tipping point” is loaded with dreadful implications. It evokes a climate breakdown supercharged by the mass escape of methane locked in Siberian permafrost, or the great currents … Read more