Scientists Archives

Scientists added sulfuric acid weekly to an Ontario lake for 17 years, lowering pH from 6.8 to 5.2; decades later its lake trout population remains below half its former level

Representative Image (AI-generated) A lake in northwestern Ontario became the setting for a landmark experiment on the effects of acid rain. For 17 years, scientists deliberately added sulfuric acid to Lake 223 every week, gradually changing the water’s chemistry to mimic the effects of acid rain that was damaging lakes across North America and Europe. […]

Michigan’s AQI hit 616 after Ontario wildfire smoke crossed into the US; scientists warn a warming climate could make such pollution more common

Michigan’s AQI hit 616 after Ontario wildfire smoke crossed into the US (Image: AI Generated) Smoke from Canadian wildfires can travel hundreds or even thousands of kilometres, turning a distant fire into a serious air-quality emergency. That danger was starkly illustrated when wildfire smoke from Ontario moved into the United States and contributed to exceptionally […]

Scientists spent 100 years discovering new animals and found that hotspots are emerging in unexpected places; it is now reshaping the understanding of biodiversity

Representative Image (AI-generated) For much of the past century, scientists have steadily expanded the catalogue of life on Earth, adding species that were previously unknown to science and refining the ranges of those already documented. But what happens when those discoveries are added back into the maps scientists use to understand global biodiversity? A new […]

Ancient Greek elites wore jewellery made from metal that fell from space; scientists identified meteorite iron in 3,000-year-old rings | World News

Three ancient Greek rings that were likely made using meteoritic iron and other precious metals, PC: Journal Archaeological Science Long before iron smelting became widespread in Greece, some Bronze Age elites were already wearing jewellery made from iron that may have come from meteorites. A five-year study by Matthieu Gounelle of France’s National Museum of […]

Scientists fitted a European honey buzzard with a GPS tracker. The bird flew for 42 days, covering more than 10,000 km from South Africa to Finland and helping researchers uncover the secrets of one of nature’s greatest migrations |

A tiny GPS tracker attached to a European honey buzzard revealed an extraordinary feat of endurance that few humans could match. Over 42 days, the bird travelled more than 10,000 km from its wintering grounds in South Africa to its breeding habitat in Finland, crossing deserts, mountain ranges and numerous countries along the way. The […]

Britain’s famous 1976 heatwave record has finally been broken, but scientists say the real danger is only beginning | World News

For decades, the summer of 1976 has occupied a special place in British weather history. It has been the season people return to whenever prolonged heat or dry conditions become part of the conversation. This year, however, the comparison has shifted. Reportedly, the figures recorded at the University of Reading suggest that 2026 has already […]

Alaska: Scientists find that humans and dogs have such a friendly relationship because early ancestors fed salmon to canines 12,000 years ago

Humans Fed Salmon to Canines 12,000 Years Ago, Study Suggests, Hinting at the Origin of Our Relationship With Dogs Early humans in Alaska were sharing their salmon catches with ancient canines 12,000 years ago. This shows that close relationships between humans and dog ancestors developed 2,000 years earlier than anyone previously thought in the Americas.The […]

Meet the 300,000-year-old world’s smallest cat fossil found in China that surprised scientists | World News

Scientists in China just found something amazing. It’s the world’s smallest cat fossil found in China, and it belongs to a brand-new species of extinct leopard cat. This tiny cat was so small, it could fit right in your hand.Archaeologists have unearthed the tiniest known cat fossil at an ancient human site in eastern China, […]

Every winter, Canadian rivers produce giant spinning circles of ice. Scientists now know why | World News

In the colder parts of Canada, winter occasionally produces a sight that seems more suited to a drawing than a river. A large disc of ice appears on the water, almost perfectly round, turning so slowly that its movement is easy to miss. These formations have been reported in places such as Quebec, Alberta and […]

A hidden cave in Norway protected a 75,000-year-old Arctic world until scientists finally uncovered it | World News

Long before the Arctic looked the way it does now, a stretch of Norway’s northern coastline supported an unexpectedly rich mix of wildlife. That picture has emerged from a cave where thousands of years of natural deposits quietly protected the remains of animals that lived during a comparatively mild phase of the last Ice Age. […]