During cold and flu season, plenty of us load up on pills, powders, and gummies to keep the sniffles at bay. But is it worth it—and can you overdo it? When cold and flu season arrives, many people load up with a well-known defensive weapon—pills, powders, and all the other popular forms of vitamin C. The nutrient is one of a wide suite of supplements, from vitamin A to zinc, regularly taken by those hoping to boost their immune system and overall health. But vitamin C may also be one of the most overused.Vitamin C really does help to boost the immune system and is an essential part of a...…During cold and flu season, plenty of us load up on pills, powders, and gummies to keep the sniffles at bay. But is it worth it—and can you overdo it? When cold and flu season arrives, many people load up with a well-known defensive weapon—pills, powders, and all the other popular forms of vitamin C. The nutrient is one of a wide suite of supplements, from vitamin A to zinc, regularly taken by those hoping to boost their immune system and overall health. But vitamin C may also be one of the most overused.Vitamin C really does help to boost the immune system and is an essential part of a...WW…

Forty-five thousand years ago, some of the first modern humans to call Europe home lived in and around Bulgaria’s Bacho Kiro Cave. They created adornments, like beads and pendants of cave bear teeth. They fashioned stone and bone tools and colored them with red ochre. They hunted, butchered and feasted on local animals. Artifacts of this lifestyle were left scattered in the cave, but these ancient humans left little evidence of themselves. Just a single tooth and a few tiny bits of bone survived to the present day. Yet those fragments contained enough genetic material that scientists have...…Forty-five thousand years ago, some of the first modern humans to call Europe home lived in and around Bulgaria’s Bacho Kiro Cave. They created adornments, like beads and pendants of cave bear teeth. They fashioned stone and bone tools and colored them with red ochre. They hunted, butchered and feasted on local animals. Artifacts of this lifestyle were left scattered in the cave, but these ancient humans left little evidence of themselves. Just a single tooth and a few tiny bits of bone survived to the present day. Yet those fragments contained enough genetic material that scientists have...WW…

Spring is in the air, and the animal kingdom is on the move. Vernal migrations feature everything from fish and birds to big, shaggy mammals and tiny insects. These journeys are about as diverse as the species themselves, but Andy Davis, a University of Georgia ecologist and editor of the journal , says the mass wildlife movements have one important thing in common.“It’s hard; it’s a taxing, energetically expensive journey,” Davis says. “It allows them to exploit different resources that they wouldn’t have been able to find if they’d stayed put, but a lot of animals die trying to complete...…Spring is in the air, and the animal kingdom is on the move. Vernal migrations feature everything from fish and birds to big, shaggy mammals and tiny insects. These journeys are about as diverse as the species themselves, but Andy Davis, a University of Georgia ecologist and editor of the journal , says the mass wildlife movements have one important thing in common.“It’s hard; it’s a taxing, energetically expensive journey,” Davis says. “It allows them to exploit different resources that they wouldn’t have been able to find if they’d stayed put, but a lot of animals die trying to complete...WW…

Scientists studying the roots of humanity’s family tree have found several branches entangled in and around a South African cave.Two million years ago, three different early humans—Australopithecus, Paranthropus, and the earliest-known Homo erectus—appear to have lived at the same time in the same place, near the Drimolen Paleocave System. How much these different species interacted remains unknown. But their contemporaneous existence suggests our ancient relations were quite diverse during a key transitional period of African prehistory that saw the last days of Australopithecus and the...…Scientists studying the roots of humanity’s family tree have found several branches entangled in and around a South African cave.Two million years ago, three different early humans—Australopithecus, Paranthropus, and the earliest-known Homo erectus—appear to have lived at the same time in the same place, near the Drimolen Paleocave System. How much these different species interacted remains unknown. But their contemporaneous existence suggests our ancient relations were quite diverse during a key transitional period of African prehistory that saw the last days of Australopithecus and the...WW…