Earth’s carbon sinks are being eroded by climate change feedback loops

Wildfires, like this one in Greece, are blunting Earth’s natural carbon sink Thanassis Stavrakis/AP Photo/Alamy Climate change is increasingly affecting the ability of Earth’s natural carbon sinks to soak up excess carbon dioxide, and this means more of this greenhouse gas emitted by human activity is staying in the atmosphere, leading to further warming. These…

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We Thought DNA Ran Our Lives until We Discovered RNA Is in Charge

In 1957, just four years after Francis Crick and other scientists solved the riddle of DNA’s structure—the now famous double helix—Crick laid out what he called the “central dogma” of molecular biology, which his colleague James Watson later said implied that biological information flows inexorably from DNA to RNA to proteins. Although Watson was oversimplifying,…

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How Plastics Went from a Sustainability Solution to an Environmental Crisis

August 19, 2025 4 min read Plastics Started as a Sustainability Solution. What Went Wrong? Synthetic polymers were supposed to free us from the limitations of our natural resources. Instead they led to an environmental crisis By Jen Schwartz edited by Seth Fletcher In 1864 Scientific American published a competition launched by a billiard-table manufacturing…

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Cold fusion: Nuclear fusion gets a boost from a controversial debunked experiment

The Thunderbird nuclear fusion reactor Berlinguette Group, UBC Cold fusion, one of the most notorious blunders in science, is making a return – of sorts. Scientists have resurrected an experiment that was once claimed to show room-temperature nuclear fusion, offering the tantalising possibility of producing energy via the same mechanism as within in the sun,…

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How Scientists Finally Learned That Nerves Regrow—Even in the Adult Brain

Billions of nerve cells send signals coursing through our bodies, serving as conduits through which the brain performs its essential functions. For millennia physicians thought damage to nerves was irreversible. In ancient Greece, founders of modern medicine such as Hippocrates and Galen refused to operate on damaged nerves for fear of causing pain, convulsions or…

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