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For more than a decade, anglers on Lake Memphremagog—which straddles the Quebec–Vermont border—have been catching brown bullhead catfish marked with distinctive black lesions.
Scientists studying one of nature's greatest reproductive innovations have discovered how some lizards evolved from laying eggs to giving birth to live young. The new research is the first to reveal the evolutionary process ...
As antimicrobial resistance grows around the world, novel therapies to counter it become increasingly important. Phages—viruses that infect bacteria—are an exciting avenue of research in this regard, providing a means to ...
Cell-communication molecules called kinases play a key role in the growth and spread of many cancers. But exactly which kinases are active in a particular cancer is not always clear—there are 1.8 million sites on human proteins ...
Every cell in the body contains essentially the same DNA, yet a brain cell behaves differently from a muscle cell or an immune cell. The difference lies largely in how each cell reads its genetic instructions.
In the living world, roughly a third of all proteins we know rely on metals to function. Zinc helps enzymes break down molecules, iron helps carry oxygen in the blood, calcium helps relay signals in cells and potassium flows ...
A functional nervous system depends on the cooperation of many kinds of cells. As developing organisms build their nervous systems, their neurons must take on different forms and functions to fulfill their designated roles. ...
Every time a cell divides, it must accurately copy its entire genetic instruction manual. Before this process can begin, cells load their DNA-copying motor—a complex of six subunits known as the MCM2-7 helicase—onto DNA. ...
The recent announcement of novel, viable viruses created by artificial intelligence (AI) was celebrated as a major advance in the fight against antibiotic resistance. But it also raised urgent concerns about regulation.
Between 29,000 and 19,000 years ago, the planet experienced some of its coldest temperatures and drastic landscape changes at the peak of the Ice Age, during the Last Glacial Maximum (LGM), the period of most extensive global ...
