When we think of time travel, wild scenarios always come to mind; however, physics tells us something clearer: There are two real ways to go to the future, and we're certain they both work! So why is going back to the past so problematic? In this video, without breaking the boundaries set by science
35:14
17:11
24:19
34:45
23:38
20:57
34:51
17:24
21:05
22:47
16:04
34:37
25:29
18:17
24:02
35:35
18:05
25:18
26:13
30:41