Myopia link to poor sleep, and screen time

Was Einstein wrong? Why some astrophysicists are questioning the theory of space-time

The next launch of a SpaceX Falcon Heavy rocket has been delayed from July to October to await the readiness of its U.S. military payload, and the following Falcon Heavy flight has been rescheduled from late this year to some time in 2022.

It’s Crunch Time and Biden’s Climate Gambit Faces Steep Hurdles