3,699 articles frome SEPTEMBER 2019

One expert says findings by international experts represent ‘egregious abuse of evidence’

New research that claims red and processed meat is probably not harmful to our health has caused controversy among experts who maintain people should cut down.

The World Health Organization has classified red and processed meats as cancer-causing. Public health bodies worldwide urge people to limit their intake of red and processed meat to reduce their cancer risk. The NHS advises that people who eat 90g of meat a day – equivalent to three thin slices of roast meat – should cut down to 70g.

Continue reading...

NASA issues its fast-track plan to get two commercial lunar landers for 2024-2025After two preliminary rounds, NASA today published its final call for industry proposals to have the first two landers capable of putting astronauts on the moon ready for 2024 and 2025. NASA's broad agency announcement, known as NextSTEP-2 Appendix H, makes clear that two different companies would be chosen to build human-capable landers. One of them would be used for the Artemis 3 mission, which aims to send two astronauts to and from the lunar surface in 2024. The other would be used for a demonstration mission in 2025. Those two missions would set the stage for putting an upgraded… Read More


As one descends a mountain, the temperature steadily increases. A new study by a team including Andrew Nottingham, a research associate at the Smithsonian Tropical Research Institute (STRI) and post-doctoral fellow at the University of Edinburgh, took advantage of this principle to predict what would happen as tropical soils warm. The team discovered that warmer tropical soils released more car-bon, the species of soil microbes changed and microbial activity increased.

While most people imagine alligators and crocodiles as being much the same now as they were during the age of dinosaurs, digging into the fossil record shows much more diverse species through time. Semiaquatic ambush predators resembling modern alligators and crocodiles are seen in fossil relatives going back to the Jurassic period, but the group also includes oceangoing crocs with flippers and tail flukes, heavily armored pug-faced crocs, long-legged crocs that ran on land, and giant crocs with tiny teeth and surfboard-shaped skulls.

Last year, biologists discovered that bird populations in the Mojave Desert had crashed over the past 100 years. The biologists now have evidence that heat stress is a key cause. Simulations with a computerized 'virtual bird' suggest that with higher temperatures, birds need more water to keep cool. Larger insectivores or carnivores should be most affected, and small seed-eaters less so if drinking water is available: just as the biologists reported last year.

Study suggests climax may be an evolutionary hangover – but crucial questions remain

A possible explanation for one of biology’s greatest mysteries, the female orgasm, has been bolstered by research showing that rabbits given antidepressants release fewer eggs during sex.

The human female orgasm has long proved curious, having no obvious purpose besides being pleasurable.

Continue reading...

Researchers have developed a new variant of the gene editing technique CRISPR-Cas9 that has the potential to increase precision during gene therapy in humans. The new variant reduced unintended changes in DNA compared to its wildtype, suggesting it could play a role in gene therapies that require high precision. The study by researchers from Karolinska Institutet's Ming Wai Lau Centre of Reparative Medicine in Hong Kong is published in the journal PNAS.