California won't immediately list Joshua tree as threatened

California won't be listing the iconic western Joshua tree as a threatened species for now after the four-member Fish and Game Commission couldn't reach agreement Thursday on how best to protect the plant from climate change.

UN weather agency affirms 2020 Arctic heat record in Siberia

The U.N. weather agency said Tuesday it has certified a 38-degree Celsius (100.4 Fahrenheit) reading in the Russian town of Verkhoyansk last year as the highest temperature ever recorded in the Arctic, the latest in a string ...

Microbes and viruses: A threat to Mars?

The Atacama Desert stretches along Chile's Pacific coast over 100,000 square kilometers. It is one of the most arid places in the world. Annual precipitation averages 0.5 mm, which is less than for the Death Valley in California.

Sierra Nevada shown to have two geologic birthdays

When geologist Elizabeth Miller started mapping a fault system in Death Valley, she questioned the origin of some sedimentary rocks previously assumed to be locally derived. Now, analysis has revealed where they really came ...

NASA tracks heat wave over US southwest

While one science instrument mapped the dome of high pressure that settled over the southwestern U.S. in early July, another captured ground surface temperatures.

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