Researchers find that timing of mass extinctions lines up with asteroid impacts and massive volcanic eruptions — ScienceDaily

Mass extinctions of land-dwelling animals — including amphibians, reptiles, mammals, and birds — follow a cycle of about 27 million years, coinciding with previously reported mass extinctions of ocean life, according to a new analysis published in the journal Historical Biology. The study also finds that these mass extinctions align with major asteroid impacts and […]

Mass extinctions of land-dwelling animals occur in 27-million-year cycle

Credit: CC0 Public Domain Mass extinctions of land-dwelling animals—including amphibians, reptiles, mammals, and birds—follow a cycle of about 27 million years, coinciding with previously reported mass extinctions of ocean life, according to a new analysis published in the journal Historical Biology. The study also finds that these mass extinctions align with major asteroid impacts and […]

Scientists solve mystery of mass coho salmon deaths. The killer? A chemical from car tires

Coho salmon, Tillamook State Forest, Oregon. Credit: Oregon Department of Forestry When officials in Seattle spent millions of dollars restoring the creeks along Puget Sound—tending to the vegetation, making the stream beds less muddy, building better homes for fish—they were thrilled to see coho salmon reappear. But when it rained, more than half, sometimes all, […]

Mass evacuations hailed for casualty-free India cyclone

Residents walk along a road as Cyclone Nivar approached the southeastern Indian coast in Puducherry on November 25, 2020 Accurate forecasting and the evacuation of several hundred thousand people helped avert any loss of life after a cyclone clobbered southeast India, authorities said Thursday, as rescuers worked to restore power and clear fallen trees. Nivar […]

New drug for HCM reduces heart mass — ScienceDaily

For the first time, a medication has impacted heart muscle thickness and function for patients with the most common inherited heart condition, rather than simply addressing their symptoms. “This is the first study to show a favorable impact of a medication on cardiac structure and function in any form of hypertrophic cardiomyopathy,” says Sara Saberi, […]

A Little-Known Mass Extinction and the “Dawn of the Modern World”

Massive volcanic eruptions followed by climate change, widespread extinction, and, eventually, the emergence of new life forms. It sounds like the story of one of Earth’s five great mass extinctions. Now researchers say the same description applies to a lesser known—but highly consequential—event referred to as the Carnian Pluvial Episode (CPE), 233 million […]

Race to save whales in Sri Lanka’s biggest mass stranding

The causes of mass strandings remain unknown Rescuers and volunteers were racing Monday to save about 100 pilot whales stranded on Sri Lanka’s western coast in the island nation’s biggest-ever mass beaching. The short-finned pilot whales began beaching at Panadura, 25 kilometres (15 miles) south of Colombo, shortly before dusk and within an hour their […]

Geomagnetic Storms Probably Don’t Cause Mass Cetacean Strandings

Some coastal regions experience repeated episodes in which cetaceans such as whales and dolphins strand themselves on beaches and shorelines, sometimes by the hundreds. A variety of causes have been suggested for these events, which remain a mystery in marine biology, from the use of active sonar by the military to interactions with […]