This Drone Gun Uses Radio Waves to Take Down Drones

Just in case you think about Christmas gift for Dr. Polozov… ))
[P.S.: “it is not offered for sale or lease in the United States, other than to the US government and its agencies.”]

Great Barrier Reef Hit by Worst Coral Die-Off on Record, Scientists Say

Great Barrier Reef had suffered the worst coral die-off ever recorded after being bathed this year in warm waters that bleached the coral.