Reversal of Tibetan Plateau flow blamed for 2022 heat wave

In the mid-summer (July–August) of 2022, extreme climate events occurred over subtropical Asia. Persistent heat waves hit the Yangtze River valley in East Asia, bringing secondary disasters such as drought, wildfires and ...

Ancient ostrich eggs found in southern Israeli desert

Ostrich eggs estimated to be at least 4,000 years old have been found in Israel, archaeologists announced on Thursday, providing insight into the life of ancient peoples in the region.

Lascar volcano in Chile stirs, sending plume skyward

A volcano in the Andes in Chile's north rumbled to life early Saturday, triggering minor earth tremors and sending a plume of smoke and ash 6,000 meters (nearly 20,000 feet) into a clear sky.

Microbial miners could help humans colonize the moon and Mars

The biochemical process by which cyanobacteria acquire nutrients from rocks in Chile's Atacama Desert has inspired engineers at the University of California, Irvine to think of new ways microbes might help humans build colonies ...

Martian dust devil analogues in the Mojave Desert

In the Mojave Desert, the sun beats down on the ground and makes pockets of low pressure. Cool air rushes into these areas, where it warms and rises, creating vortices that pick up dust. These types of dust devils aren't ...

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Desert

A desert is a landscape or region that receives an extremely low amount of precipitation, less than enough to support growth of most plants. Most deserts have an average annual precipitation of less than 400 millimetres (16 in). A common definition distinguishes between true deserts, which receive less than 250 millimetres (10 in) of average annual precipitation, and semideserts or steppes, which receive between 250 millimetres (10 in) and 400 to 500 millimetres (16 to 20 in). Deserts can also be described as areas where more water is lost by evapotranspiration than falls as precipitation. In the Köppen climate classification system, deserts are classed as BWh (hot desert) or BWk (temperate desert). In the Thornthwaite climate classification system, deserts would be classified as arid megathermal climates.

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