|
|
A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.
The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
![That politics was always a rough business is shown in this cartoon, which shows Lincoln, assisted by](https://biology-forums.com/gallery/47/medium_375552_19_08_15_9_26_03_22340753.jpeg)
![Place the tennis balls in a sock on the floor behind you, then lie with the middle of your thoracic ...](https://biology-forums.com/gallery/27/medium_679044_04_04_17_12_45_53_274381933.jpeg)