Ancient humans possessed sophisticated knowledge of the properties of the stones they used to make tools.
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Passing Stars Shorten Earth’s Time Horizon
Stars in the solar neighborhood could jostle planetary orbits, making it harder to turn back the clock and examine Earth’s orbital or climate history.
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Ocean Pollution Makes Microbes Adapt
Some bacteria thrive in the sometimes-toxic soup of crude oil and chemical dispersants.
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Giant Impacts Might Have Triggered Snowball Earth Events
Running into the right space rock at the right time may have been enough to tip Earth into a runaway cold spell.
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Scientists Quantify Blue Carbon in Bahamas Seagrass
The island nation’s underwater fields store huge reserves of carbon, though not as much as scientists thought.
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Climate Change Is Weakening River Seasonality in the North
Seasonal flow variability is decreasing as climate change alters Earth’s systems, creating challenges for water management.
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A Long-Lost Tropical Island Lies Off Brazil’s Coast
An undersea volcanic plateau in the southwestern Atlantic was a tropical island 45 million years ago.
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La acidez del océano antártico aumentará rápidamente a finales del siglo
Nuevos estudios muestran que los niveles de acidez podrían llegar a duplicarse para el 2100, poniendo en peligro los ecosistemas frágiles del gélido Océano Austral.
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What Biden’s State of the Union Means for Science
The president briefly mentioned efforts to combat climate change and investments in science as he kicked off his run for a second term.
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Hiroshima Fallout May Offer a Glimpse of the Early Solar System
Bits of glass called Hiroshimaites may have formed by processes similar to those that formed the Sun and the planets.