[ad_1] Something unusual has been going on in the wild. Many members of the largest species of dolphins, commonly called killer whales (Orcinus orca), have been found sharing freshly killed prey with humans. And they don’t just offer their prey: the dolphins have waited for the humans to respond. In a new study reported in the JournalofComparativePsychology, researchers have investigated

[ad_1] Rising seas are a major consequence of global warming, with many implications for low-lying coastal areas. Coral reefs, which are highly sensitive to their environment, are also particularly vulnerable to fluctuations in sea level. When the sea level rises, sunlight may no longer penetrate the water to reach a coral reef that it could reach before. This can lead

[ad_1] A labelled diagram of the human pelvis. | Photo Credit: Public domain Walking on two legs is the single most distinctive trait that separates humans from other primates. Unlike apes, our pelvis is short, broad, and bowl-shaped, and thus stable for walking upright while supporting internal organs and holding space to deliver large-headed infants. For more than a century,

[ad_1] The Jinshajiang River ravine in Yunnan province in China, November 2018. | Photo Credit: Rod Waddington (CC BY-SA) A range of natural and human-induced factors have caused declines in the flows of at least 70% of hydrological stations in China, the most comprehensive analysis of this kind attempted in the country has found. Changes in land-use and vegetation cover

[ad_1] Plastic is cheap, versatile, and used almost everywhere, from packaging and textiles to medical supplies. But unlike natural materials, plastic doesn’t simply decay; instead, it breaks down into smaller fragments called microplastics (<5 mm) and nanoplastics (<1 µm). These particles persist for decades or longer, accumulate in water bodies, and attract other pollutants like heavy metals, antibiotics, and toxic