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CO2 can stimulate plant growth, but only when enough nitrogen is available--and that key ingredient has been seriously miscalculated. A new study finds that natural nitrogen fixation has been overestimated by about 50 percent in major climate models. ...

One of the most complete human ancestor fossils ever found may belong to an entirely new species, according to an international research team. The famous "Little Foot" skeleton from South Africa has long been debated, but new analysis suggests it ...

New research shows Karnak Temple was built on a rare island of high ground formed as Nile river channels shifted thousands of years ago. Before that, the area was too flooded for settlement, making the temple's eventual rise even more remarkable. The ...

Not all microbes are villains--many are vital to keeping us healthy. Researchers have created a world-first database that tracks beneficial bacteria and natural compounds linked to immune strength, stress reduction, and resilience. The findings ...

Overfished coral reefs are producing far less food than they could. Researchers found that letting reef fish populations recover could boost sustainable fish yields by nearly 50%, creating millions of extra meals each year. Countries with high hunger ...

Scientists may have cracked the case of whether a seven-million-year-old fossil could walk upright. A new study found strong anatomical evidence that Sahelanthropus tchadensis was bipedal, including a ligament attachment seen only in human ancestors. ...

Researchers have uncovered thousands of preserved metabolic molecules inside fossilized bones millions of years old, offering a surprising new window into prehistoric life. The findings reveal animals' diets, diseases, and even their surrounding ...

Scientists are uncovering new clues that a cosmic explosion may have rocked Earth at the end of the last ice age. At major Clovis-era sites, researchers found shocked quartz--evidence of intense heat and pressure consistent with a comet airburst ...

Moss may look insignificant, but it can carry a hidden forensic fingerprint. Because different moss species thrive in very specific micro-environments, tiny fragments can reveal exactly where a person has been. Researchers reviewing 150 years of ...

A powerful 7.4-magnitude earthquake struck northern Chile in July 2024--and it wasn't supposed to be that strong. Unlike Chile's infamous shallow "megathrust" quakes, this one ruptured deep inside the Earth, where shaking is usually weaker at the ...