80 million years ago, the average temperature was 7-8 C degrees warmer than today, where we have an average temperature of 15 C degrees. The CO2 content of the atmosphere was 5-50 times higher than today.
Why does the snow squeak?
If the temperature is low enough, snow squeaks when you step on it. The sound occurs because you actually step on the fine snow crystals.
Who founded the Tsingtao brewery?
The Tsingtao Brewery in China was founded in 1903 by Germans who had settled in Qingdao.
Where does chess come from?
There are several theories about when and where chess appeared, and several countries claim to be the place where the first chess-like game was invented. The most common assumption is that the game originated in India, where it was called Chaturanga, and that the time of its emergence is the 6th century BC.
What are skis made of?
Originally skis were made from strong but flexible wood, such as ash, but today they are made almost exclusively from fiberglass or carbon fiber, often with a wooden core to prevent them from breaking easily.
How many dust mites are there in a double bed?
If you wanted to count all the dust mites in a typical double bed and you counted two per second, it would take 11 days to finish the count.
When do children grow the most?
Children grow the most at night. This is when the most growth hormone is secreted.
What is molding cardboard used for?
Molded paperboard is used for molded packaging such as egg trays. In 1995, the consumption of molding board was estimated to be around 2,200 tons.
