Towering woodlands in the West are being permanently replaced by tracts of spiky shrubs. Conditions “just aren’t normal anymore,” one researcher said.
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In a decades-long crisis, marine life has suffered as oxygen periodically dwindles in waters along the Gulf Coast.
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Test your science knowledge.
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The policy aims to greatly increase the number of spacecraft launches and re-entries.
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Extreme temperatures and drought are adding to the stress on oak trees that have lived for hundreds of years and play a key role in the national imagination.
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Researchers believe a young man buried inside a Scottish castle was a victim of the long-feared siege weapon, more powerful than a typical catapult.
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NASA’s Swift Observatory, which studies some of the most powerful explosions in the universe, will soon burn up in the atmosphere.
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The milestone by the private company, LandSpace, could put China closer to challenging SpaceX’s rule in lower-cost spaceflight.
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We aren’t the only animals that like to take care of other species. A new study finds that the roots of keeping a pet may stretch deep into our primate past.
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The president may disdain clean energy tech, but energy storage is also crucial for A.I. and defense — and China’s dominance in the sector has officials worried.
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The “war on drugs” sought to reduce substance abuse by driving up prices and lowering demand. Today, street drugs are less expensive and more dangerous than ever.
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Arizona’s share of the river will shrink by a third, likely increasing reliance on groundwater and raising pressure on agriculture.
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At least a half-dozen federal agencies have moved to undermine the state’s environmental efforts.
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We know that trees are good for cities. A new study finds that mature trees are especially good.
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The company’s fortunes cratered as demand for Covid-19 vaccines plummeted. But it was busy working on something else.
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At least a half-dozen federal agencies have taken action against the state that has led the nation in environmental protections.
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If multiple antidepressants haven’t helped, there are other avenues to explore.
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Dr. David Morens, a former N.I.H. official, admitted to attempts to conceal emails that discussed the origins of the pandemic.
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Moderna and Merck say the experimental vaccine prevented the return and spread of the cancer in high-risk melanoma patients.
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Dr. Overton is a fierce opponent of abortion rights and a supporter of Health Secretary Robert F. Kennedy Jr.’s Make America Healthy Again agenda.
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The move to repeal the ‘roadless rule’ would pave the way for road construction and logging in nearly 45 million acres of untouched back country.
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As water levels on the Colorado River fall to historic lows, a rafting trip through the canyon feels even more precious.
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A reworking of the spacecraft’s power systems could extend the nearly 50-year-old Voyagers’ exploration of interstellar space into the early 2030s.
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Levels in Lakes Mead and Powell have not been so low since 1957, underscoring a water crisis that plagues seven states that rely on the Colorado River.
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