what will happen of the world has a minute to end
Answers
By 7.5 billion years in the future, its surface will be past where Earth's orbit is now. So the expanding Sun will engulf, and destroy, the Earth. It's been suggested that Earth might escape. The Sun will lose mass as it grows, so Earth will spiral further out
Answer:
The Global Challenges Foundation, which works to reduce the global problems that threaten humanity, compiles an annual report on global catastrophic risks. The group released the 2018 edition in September, and the litany is harrowing: Chemical warfare, supervolcanic eruptions, asteroid collisions, and the looming effects of climate change threaten to cause everything from civilizational collapse to human extinction.
Some of these risks sound like science fiction, but so did weapons of mass destruction and climate change 100 years ago. As Allan Dafoe and Anders Sandberg of the Future of Humanity Institute write, our brains aren’t good at thinking about catastrophic risk because they either “completely neglect or massively overweight” things that are low probability. So the report, overseen by a team at GCF but with each section written by leading experts, combines historical evidence and scientific data to determine the biggest threats.
The good news for us is that scientists think the world will be habitable for at least a few hundred million more years. The bad news is there’s a lot that could change that. The risk of the threats highlighted in the report actually causing mass casualties are still small, but that doesn’t mean they’re not important to pay attention to — especially when the worst-case scenario means human extinction.
Here’s what should be keeping you up at night and what, realistically, might cause humans to go the way of dinosaurs.
1) Nuclear war
A nuclear detonation from one of today’s more powerful weapons would cause a fatality rate of 80 to 95 percent in the blast zone stretching out to a radius of 4 kilometers — although “severe damage” could reach six times as far.
But it isn’t just the immediate deaths we need to worry about — it’s the nuclear winter. This is when the clouds of dust and smoke released shroud the planet and block out the sun, causing temperatures to drop, possibly for years. If 4,000 nuclear weapons were detonated — a possibility in the event of all-out nuclear war between the US and Russia, which hold the vast majority of the world’s stockpile — an untold number of people would be killed, and temperatures could drop by 8 degrees Celsius over four to five years. Humans wouldn’t be able to grow food; chaos and violence would ensue.