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Great hammerhead sharks are slow to grow and slow to reproduce, which makes them very vulnerable to overfishing — worldwide populations have shrunk and genetic diversity is dangerously low. To conserve these sharks, identifying the habitats they use and when they use them is critical. Scientists tagging and tracking sharks near Andros Island in the Bahamas have now discovered that although some sharks travel to the east coast of the US, others prefer to stick closer to home, living in the warm waters around Andros and returning to the same sites year after year.

The coffee from most of the coffee machines in workplaces contains relatively high levels of cholesterol-elevating substances. There is a big difference in comparison to coffee made in regular paper filter coffee makers, which filter out most of these substances.

Study.

Mixed methods study found hopelessness among patients struggling with condition after trying multiple antidepressants

People have noticed their pets reacting to the Oscar-winner “Flow” which features animated animals, making people wonder if their cat or dog recognizes themself on screen.

On 19 March 2025, the European Space Agency’s Euclid mission released its first batch of survey data, including a preview of its deep fields. Here, hundreds of thousands of galaxies in different shapes and sizes take centre stage and show a glimpse of their large-scale organisation in the cosmic web.

Waste-to-nutrition" technologies aim to transform agricultural or food waste into ingredients for human and animal consumption, while reducing the environmental impact of food systems. INRAE scientists assessed the environmental impact of 5 of these technologies in nine usage scenarios in France. They compared them with existing waste recovery technologies such as anaerobic digestion and composting. Their results, published in Nature Sustainability, show that these new technologies do not systematically provide any environmental benefits compared with existing solutions.

An analysis of the 100 most-viewed TikTok videos related to ADHD revealed that fewer than half the claims about symptoms actually align with clinical guidelines for diagnosing ADHD.

Politicians have mocked, belittled, and cut federally funded research for decades, but funding basic science has a long history of lifesaving discoveries.

For years, post-traumatic stress disorder (PTSD) has been studied primarily in people who experience trauma firsthand. But what about those who witness it — military veterans, first responders, health care workers, or bystanders to violence — who constitute 10 percent of all PTSD cases?

New research from Virginia Tech, published in PLOS ONE, reveals that witnessing trauma triggers unique brain changes, distinct from those caused by experiencing trauma firsthand. The study is the first to shed light on the molecular differences between directly acquired PTSD and bystander PTSD and could pave the way for changes in how the disorders are treated.

The agency froze most spending above $1. Government researchers now struggle to carry out basic functions of their jobs.

Wealthy, educated Americans face far fewer health risks