When it comes to extraterrestrial threats, you can never be too careful, and NASA and FEMA aren't taking any chances. The two agencies, together with some international groups, are holding a practice run of what would ensue in case an asteroid, comet or other near-Earth object (NEO) came hurtling toward the planet. This type of natural disaster is not very likely to happen, but would be catastrophic in the rare chance that it actually does, NASA said in June 2018.
Scientists revived vital functions in the brains of pigs hours after they died; a major breakthrough that could help treat victims of heart attacks and strokes. When humans and large mammals die, the cells responsible of neutral function begin to degrade as result of the blood supply end. Reviving the cells is long considered to be impossible.