Some basic ideas about physics and astronomy remain so mysterious, and their explanations so flexible, they may lead some to question whether they should be called "hard sciences."
Left-leaning scientists have never given up on the 19th century notion that criminals are born, not made. Other evidence suggests "innate tendencies" can be overcome.
The search for extra-terrestrial intelligence is like a detective story without a body. All those new planets, but no signal—at least not one that most scientists will accept.
Here are examples of recent claims in science that seem to contradict what some would consider intuitively obvious. They should be kept in mind when evaluating other scientific truisms, like evolution.