Plants that are not cared for will cry for help, a thirsty plant will make a high-pitched sound that is too high for us to hear. See more

Toxic house plants poison more children than household chemicals. See more

In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces! See more

Men can read smaller print than women; women can hear better. See more

If you yelled for 8 years, 7 months and 6 days, you would have produced enough sound energy to heat one cup of coffee. See more

Blue and fin whales can create the loudest sound by animals ever recorded. See more

The cockroach has a high resistance to radiation and is the creature most likely to survive a nuclear war. See more

The human heart creates enough pressure when it pumps, to squirt out blood 30 feet high. See more