Ice isn't slippery. What makes people and things slip on ice is water. A thin layer of ice melts when pressure is applied to it and it is this wet layer on top of the ice that is slippery.
153
Sudbury Valley School allows students to do whatever they want; no curriculum, tests, homework, or even classes unless requested. 82% of students get accepted to college, as opposed to the 63% national public school average.
21
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
At 90 degrees below zero, your breath will freeze in mid-air and fall to the ground.
25
You are more likely to be killed by a champagne cork than a poisonous spider!
193
A typical full-time worker in the US with a four-year college degree earns about $50,000. This is 62% more than a worker with only a high-school diploma.
72
When Heinz ketchup leaves the bottle, it travels at a rate of 25 miles per year.
127