Global Warming: We are polluting the atmosphere with heat trapping gases according to statistics and basic science.
Evolution: Sometimes screw-ups help. Evolution preserves anything that helps an organism compete with its species brethren.
Big Bang: Galaxies are flinging apart have been for 12 billion years, multiple independent lines of evidence.
Ghosts: If there is no reason to suppose something exists then it isn't supposed to exist.
Souls: If there is no reason to suppose something exists then it isn't supposed to exist.
Gods: If there is no reason to suppose something exists then it isn't supposed to exist.
Aliens: 100,000,000,000,000,000,000 is a big number. Space is too big to come here to molest cows.