Chinese researchers reported in the journal Nature how

the anesthetic painkiller ketamine blocks the neuronal activity that dr

ives depression-like behavior. The finding may provide new perspectives on the tre

atment of depression and anxiety, which currently affects some 300 million people worldwide.

4.DNA NANOROBOT FOR CANCER THERAPY

Chinese scientists have constructed an autonomous DNA robot programmed to transport p

ayloads and present them specifically in tumors. The nanorobot proved safe and effective for mice and pi

gs. It represents a promising strategy for precise drug delivery in cancer therapy.

5.PRECISE MEASUREMENTS OF THE GRAVITATIONAL CONSTANT

Chinese scientists have calculated the most precise value of the gravitational con

stant, one of the most fundamental constants of nature. To achieve their results, the team used both the angular-acc

eleration-feedback method and time-of-swing method to come close to producing an accurate value.

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