Cirrus clouds form around mineral dust and metallic particles, study finds
At any given time, cirrus clouds—the thin wisps of vapor that trail across the sky—cover nearly one-third of the globe. These clouds coalesce in the upper layers of the troposphere, often more than 10 ...
Global carbon dioxide levels reach new monthly record (Update)
In another ominous sign of human-caused climate change, US government scientists said Wednesday that global carbon dioxide concentrations have reached a new monthly record of 400 parts per million.
Troubled forecasters seek way to improve tornado warnings
Forecasters troubled by the high death count from twisters in Alabama and Joplin, Missouri, four years ago say they must put away their "nerd-speak" and find better ways to communicate if the public is going ...
Jaws meets kangaroo? Rare, cute pocket shark found in deep
Think Jaws meets a kangaroo, with maybe a touch of cute kitten, and you've got the aptly named pocket shark—the newest and rarest species found off the U.S. coast.
Scientists take aim at Four Corners methane mystery
Researchers from several institutions are in the Four Corners region of the U.S. Southwest with a suite of airborne and ground-based instruments, aiming to uncover reasons for a mysterious methane "hot spot" ...
Severe solar storm may disrupt power, satellites (Update)
A pair of solar eruptions over the weekend have unleashed a severe geomagnetic storm that could disrupt power and communications on Earth, US officials said Tuesday.
SpaceX launches observatory on third try, nixes landing test (Update 2)
SpaceX launched an observatory inspired by former Vice President Al Gore toward a solar-storm lookout point a million miles away Wednesday.
SpaceX unmanned spaceship splashes down near Southern California
An unmanned Dragon spaceship splashed back to Earth on Tuesday after a successful supply run to the International Space Station but its owners were forced to scrub the launch of an important weather satellite ...
The heat is on; NOAA, NASA say 2014 warmest year on record
For the third time in a decade, the globe sizzled to the hottest year on record, federal scientists announced Friday.
Storms' lingering cold water paths restrict intensity of following tropical cyclones
It's an oceanic case of sibling rivalry. Large, first-born cyclones drink in most of the ocean's warmth, leaving cold water leftovers for sibling storms that cross its path. Pacific Northwest National Laboratory ...
NIST 'combs' the atmosphere to measure greenhouse gases
By remotely "combing" the atmosphere with a custom laser-based instrument, researchers from the National Institute of Standards and Technology (NIST), in collaboration with researchers from the National Oceanic ...
Warming Earth heading for hottest year on record (Update)
Earth is on pace to tie or even break the mark for the hottest year on record, U.S. meteorologists say.
New method efficiently estimates surface reflectivity from incoming sunlight bounced back by clouds
Capturing sunlight reflected off the Earth's surface and bounced off a cloud back to the Earth is an effective measure of surface reflectivity—or surface albedo, the measure of how mirror-like the Earth's ...
World breaks monthly heat record two times in a row (Update)
The globe is on a hot streak, setting a heat record in June. That's after the world broke a record in May.