PSW 2492 The Emerging Directed Energy Weapons | Tom Karr & Jim Trebes
1:42:00
PSW 2495 Lessons from the Universe's Baby Picture | David Spergel
1:55:09
PSW 2510 The James Webb Space Telescope | Robert Smith
33:49
COULD SATELLITE LASERS REALLY DO THIS?...
21:54
Geothermal Energy is Changing
24:27
The Future of Warfare: What will the Battlefield Look Like in 2050
1:59:38
PSW 2505 The Nuclear Clock | Jun Ye
24:39
Testing the US Military’s Worst Idea
1:16:54