The vapor that plants emit when they breathe serves to lower the land surface temperature, much like watering the yard on a hot day. 

An international environmental agreement to regulate the use of chemicals depleting the ozone layer may have inadvertently allowed higher levels of other harmful chemicals to flourish, new research co-led by York University and Environment and Climate Change Canada has found.

In 2002, Earth Observatory published one of the site’s most popular images: the Great Bahama Bank. Eighteen years later, the science has advanced but the sand has not.

On March 19, California was one of the first states to set mandatory stay-at-home restrictions in an attempt to slow the spread of COVID-19.

Arctic sea ice helps keep Earth cool, as its bright surface reflects the Sun’s energy back into space.

Carnegie Mellon University researchers working with an international team of scientists have discovered a previously unknown mechanism that allows atmospheric particles to very rapidly form under certain conditions.

Scientists studying air quality are working to find ways of monitoring ammonia – an increasing species in the atmosphere closely linked to water eutrophication, soil acidity, and biodiversity loss. 

Masks, gowns, and other personal protective equipment (PPE) are essential for protecting healthcare workers. 

NASA’s Terra satellite revealed powerful storms in Vongfong as it ramped up from a tropical storm to a typhoon.

Ever since Covid-19 began spreading in the U.S., state governments have been scrambling to find and secure N95 respirator masks, the kind that seal against the face and filter out infectious particles, protecting frontline workers from inhaling the coronavirus.