As policymakers seek to reduce carbon dioxide and other pollutants through increases in renewable energy, improving energy efficiency or electrifying transportation, a key question arises: Which interventions provide the largest benefits to avoid the negative health effects of air pollution? 

Tropical Depression Fifteen or TD15, developed off the west coast of Africa on Oct. 14 by 5 p.m. EDT. The depression never strengthened into a tropical storm before it reached the end of its life.

As global temperatures continue to rise, the thawing of permafrost in Arctic areas is being accelerated and mercury that has been trapped in the frozen ground is now being released in various forms into surrounding waterways, soil and air.

NASA's Hubble Space Telescope has given astronomers their best look yet at an interstellar visitor — comet 2I/Borisov — whose speed and trajectory indicate it has come from beyond our solar system.

Researchers have discovered a new geophysical phenomenon where a hurricane or other strong storm can produce vibrations in the nearby ocean floor as strong as a magnitude 3.5 earthquake.

Scientists have launched a new initiative to create a highly detailed, 3D map of the planet.

Research confirm that changes in marine redox conditions and oxygen levels have catastrophic consequences for the life in oceans.

Satellite imagery reveals the extent of flooding in the region around Tokyo.

Texas State Climatologist says September 2019 broke the record for warmest average temperatures that was set in September 1911.

It’s likely you’ve experienced — or at least heard of — a heat wave on land: those prolonged periods when temperatures are unusually high.