The Intertropical Convergence Zone (ITCZ), also known as the doldrums, is one of the dramatic features of Earth’s climate system. Prominent enough to be seen from space, the ITCZ appears in satellite images as a band of bright clouds around the tropics. Here, moist warm air accumulates in this atmospheric region near the equator, where the ocean and atmosphere heavily interact. Intense solar radiation and calm, warm ocean waters produce an area of high humidity, ascending air, and rainfall, which is fed by converging trade winds from the Northern and Southern Hemispheres. The convected air forms clusters of thunderstorms characteristic of the ITCZ, releasing heat before moving away from the ITCZ — toward the poles — cooling and descending in the subtropics. This circulation completes the Hadley cells of the ITCZ, which play an important role in balancing Earth’s energy budget — transporting energy between the hemispheres and away from the equator.

Compared to its dazzling deep-sea coral neighbors, the green Latrunculia austini sponge is pretty drab. Dotted with craters and pitted by deep holes the golf-ball sized sponge is curious-looking rather than beautiful. But green Latrunculia’s unique chemical composition holds a promise much greater than mere beauty.

Saturn’s largest moon, Titan, is one of our solar system’s most intriguing and Earth-like bodies. It is nearly as large as Mars and has a hazy atmosphere made up mostly of nitrogen with a smattering of organic, carbon-based molecules, including methane (CH4) and ethane (C2H6). Planetary scientists theorize that this chemical make-up is similar to Earth’s primordial atmosphere.

Scientists have developed a light-activated material that can chemically convert carbon dioxide into carbon monoxide without generating unwanted byproducts. The achievement marks a significant step forward in developing technology that could help generate fuel and other energy-rich products using a solar-powered catalyst while mitigating levels of a potent greenhouse gas.

Computer models developed by Brown University mathematicians show new details of what happens inside a red blood cell affected by sickle cell disease. The researchers said they hope their models, described in an article in the Biophysical Journal, will help in assessing drug strategies to combat the genetic blood disorder, which affects millions of people worldwide.

NASA’s Aqua satellite passed over Typhoon Nesat as the storm continued moving north toward Taiwan.   

NASA’s Aqua satellite provided infrared imagery Hurricane Hilary that showed it weakening. Within 12 hours the storm weakened to a tropical storm.

The structure of a protein key to the survival and spread of a virus that affects salmon could inform strategies to treat the flu in humans, according to scientists at Rice University.

Leading scientists from around the world convened this week at the International Congress for Conservation Biology in Cartagena, Colombia, to discuss how to better leverage science to combat illegal wildlife trade – both within countries and across international borders.

NASA-NOAA's Suomi NPP satellite captured an image of Tropical Storm Nesat being affected by vertical wind shear as it parallels the east coast of the Philippines.

On July 27, 2017 at 12:24 a.m. EDT (0424 UTC) the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard NASA-NOAA's Suomi NPP satellite provided a visible-light image of Tropical Storm Nesat as it continued moving north in the Philippine Sea. The VIIRS image showed thunderstorms circling the low-level center and a band of thunderstorms northwest of the center, running parallel to the coast of the Northern Philippines. The image also showed that the bulk of Nesat's clouds were being pushed to the southwest as a result of northeasterly vertical wind shear.