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A loudspeaker is a vital component of every device that plays sound, but while its operation is simple, it’s a surprisingly difficult device to build. [Rvanderouderaa] has made an Instructables post ...

Ultrasound and artificial intelligence-guided algae microrobots delivered chemotherapy deep into tumors in mice, paving the way to improved bladder cancer care.

MSN via Barron Kerry Stewart, an exercise physiologist and professor of medicine at Johns Hopkins, says exercise capacity "definitely declines" as we age. "With regular exercise, the decline won't be ...