bat’s sonar system
Scientists have 3D bioprinted functioning human brain tissue
When the human genome was sequenced in 2001, many thought that it would prove to be an ‘instruction manual’ for life. But the genome turned out to be no blueprint. In fact, most genes don’t have a pre-set function that can be determined from their DNA sequence. Instead, genes’ activity — whether they are expressed or not, for instance, or the length of protein that they encode — depends on myriad external factors, from the diet to the environment in which the organism develops. And each trait can be influenced by many genes.
This AI learnt language by seeing the world through a baby’s eyes
Zero-knowledge security model: an introduction
TikTok is fumbling critical business partnerships and cluttering its app with unpopular features.
Many night-flying insects hear the sonar sounds of attacking bats and take evasive action. Among moths, evasive flight is often accompanied by the production of ultrasonic sounds. Three functions of these sounds have been proposed: to startle the bat, to warn of distastefulness, or to “jam” the bat’s sonar system.
Scientists now think they know why tardigrades are so indestructible
Last month, Sean Kirkpatrick, the head of the Pentagon office responsible for investigating unexplained aerial events, stepped down. He said he was tired of being harassed and accused of hiding evidence, and he lamented an erosion in “our capacity for rational, evidence-based critical thinking.” No, aliens haven’t visited the Earth. Why are so many smart people insisting otherwise?
