Butterflies have their taste organs on their feet.

Bamboo is the tallest herbaceous plant.

More than a billion years ago, a day on Earth was only 18 hours long. As the Earth's rotation slowed down, a day today is 24 hours long. Scientists estimate that in the distant future, a day on Earth will be 960 hours long!

The name Bluetooth comes from Harald Blatand, a Danish king in the 10th century. Blatand can be interpreted as Bluetooth in English because the king liked to eat blueberries and his gums were blue every day, hence the name Bluetooth.

A scientist weighed people in the moments before and after their death and concluded that the human soul weighs 21 grams.

Bananas contain a natural chemical that can make people happy, a chemical also found in Prozac. The phrase "Holding hands, growing old together" originally described the bond between comrades-in-arms, but it was later mistakenly interpreted as a love poem.