Gmail users need to take urgent action…

Cheaper modules brought solar plants into the energy mainstream. Longer operating lives are making them better investments.
Harvard University scientists have created an artificial leaf that’s even better than the real thing.
Undeterred by decades of failure, the U.S. Army is trying again to acquire a new scout helicopter. The new rotorcraft is supposed to restore the dedicated aerial scout mission the Army gave up when in 2017 it retired its roughly 300 Bell OH-58D Kiowa Warrior copters.
And here’s a surprise. The new Future Attack Reconnaissance Aircraft also will replace half of the ground-combat branch’s 700 Boeing AH-64 Apache attack helicopters.