What will be the condition of earth after 25 years?

i am 16 years old, and i wish i could live up to 85 peacefully. but i heard that after 25 years, the earth will be facing huge crisis. that there will be global warming, flooding, diseases due to depletion of ozone layer, earthquakes and many other scary stuffs. i really got freaked out. i heard that earth will survive for many more years, but my question is will the humans too survive for many years? please give me a detailed explanation. thank u.