科学新知

BBC News 中文 | 【一周热点回顾】中国外交部周一（2日）宣布，制裁包括总部设于美国的“人权观察”（Human Rights Watch）等非政府组织（NGO）。 “人权观察”回应说，对于中国政府鉴于他们在香港修例风波中的表现而要实施详情不明的“制裁”，表示遗憾。 https://t.co/nnsVlqftHL

A highly effective HIV vaccine has been the goal of vaccinologists for nearly 35 years. Scientists report a strategy in which the first vaccine shot can lead to immune responses that generate desired broadly neutralizing antibodies (bnAbs) in humanized mice and macaques. Read Full Article

Chinese scientists created pigs containing cells from monkeys in an attempt to understand how pigs can be used to grow/harvest human organs Read Full Article

BPA levels in humans higher than previously thought, study suggests. A new method suggests that measurements used by the FDA underestimate BPA exposure by as much as 44 times. BPA is used in plastic products, food and drink containers, and animal studies have shown that it interferes with hormones. Read Full Article

Early humans domesticated themselves, new genetic evidence suggests Read Full Article

Burnout syndrome should not be underestimated. The incidence of burnout syndrome among health care professionals has increased in recent years and varies between countries and depending on different areas of specialization and work units. Read Full Article

A recent study said ‘a large burden of Human Immunodeficiency Virus (HIV) is likely attributable to a Herpes Simplex Virus type 2 (HSV-2) infection. Read Full Article

WHO, CDC data shows measles cases up 30 percent globally, with the disease killing more than 140,000 people worldwide in 2018, despite the availability of a vaccine. “That anyone should die from measles... is a collective failure which must be addressed”. Read Full Article

A new oral contraceptive that only has to be taken once a month, could reduce unintended pregnancies that result from forgetting to take a daily dose. This kind of monthly contraceptive could have a significant impact on the health of women and their families, especially in the developing world. Read Full Article

Early humans domesticated themselves, new genetic evidence suggests, after they split from their extinct relatives, Neanderthals and Denisovans, approximately 600,000 years ago. Many of the same genes analyzed in the new study have also been under selection in other domesticated animals. Read Full Article

Study on fruit flies (applies to rodents and humans as well) has identified serotonin as a chemical that triggers the body's startle response, the automatic deer-in-the-headlights reflex that freezes the body momentarily in response to a potential threat Read Full Article

Young children whose household received a housing voucher were admitted to the hospital fewer times and incurred lower hospital costs in subsequent two decades, finds new study in JAMA (n=4,604 families). There may be health benefits of helping young children move out of high-poverty neighborhoods. Read Full Article

Domesticated dogs have the the ability to spontaneously recognise and normalise both the same phonemes across different speakers, as well as cues to the identity of a word across speech utterances from unfamiliar human speakers, a trait previously thought to be unique to humans. Read Full Article

Neural network can evaluate neurological motor deficits with an accuracy equivalent to that of human experts Read Full Article

New study shows that when placed in microgravity, 80 to 90 percent of the cells in four different cancer types (ovarian, breast, nose and lung) were disabled by gravitational forces alone. This could lead to new treatments of cancer using similar conditions to microgravity. Read Full Article

Cats communicate with the help of bacteria living in their butts: the cat anal gland microbiome produces feline signaling compounds Read Full Article