Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.

现在，研究人员认为他们已经找到了一种识别这些高危婴儿的方法。 They used a sticky tape test to painlessly collect skin cell samples from the hands and backs of two-month-olds. They found detectable immune biomarker changes in the ...

Tissue glues which already exist can take several minutes to work and may drip onto other body parts. The scientists from MIT noticed how spiders catch their prey in the rain by secreting a sticky ...