Showing results for "The Race" in Biology

In 2017, author Shanna Swan and her team of researchers completed a major study. They found that over the past four decades, sperm levels among men in Western countries have dropped by more than 50 percent. They came to this conclusion after examining 185 studies involving close to 45,000 healthy men. The result sent shockwaves around the globe - but the story didn’t end there.

Here is the story of SARS-CoV-2 and its fierce journey through the human population, as seen by the scientists who study its origin, its ever-changing nature, and its capacity to kill us. David Quammen expertly shows how strange new viruses emerge from animals into humans as we disrupt wild ecosystems, and how those viruses adapt to their human hosts, sometimes causing global catastrophe. He explains why this coronavirus will probably be a 'forever virus,' destined to circulate among humans and bedevil us endlessly.

Every Living Thing centres on the rivalry pledged between two scientists, Linnaeus and Buffon, who, from 1743 to 1778 raced each other to complete an inventory of all life on Earth. Their focus was on scientific immortality and the core conception of our relationship to the natural world. Their catalogues were starkly different and showed a divergence of opinion on the creation of nature and humanity. Buffon advocating for a natural system of classification, while Linnaeus was dedicated to naming and classifying objects of nature.

Antibiotics are powerful drugs that can prevent and treat infections, but they are becoming less effective as a result of drug resistance. Resistance develops because the bacteria that antibiotics target can evolve ways to defend themselves against these drugs. When antibiotics fail, there is very little else to prevent an infection from spreading. Unnecessary use of antibiotics in both humans and animals accelerates the evolution of drug-resistant bacteria, with potentially catastrophic personal and global consequences.

Epidemiologist Steffanie Strathdee and her husband, psychologist Tom Patterson, were vacationing in Egypt when Tom came down with a stomach bug. What at first seemed like a case of food poisoning quickly turned critical, and by the time Tom had been transferred via emergency medevac to the world-class medical center at UC San Diego, where both he and Steffanie worked, blood work revealed why modern medicine was failing: Tom was fighting one of the most dangerous, antibiotic-resistant bacteria in the world.

Race has provided the rationale and excuse for some of the worst atrocities in human history. Yet, according to many biologists, physical anthropologists, and geneticists, there is no valid scientific justification for the concept of race. To be more precise, although there is clearly some physical basis for the variations that underlie perceptions of race, clear boundaries among "races" remain highly elusive from a purely biological standpoint.