In 1966 and 1967, soldiers testing Agent Orange in Canada were told the chemical was completely safe and sprayed it on each other to cool off.
The wolf's jaw can exert 1500 pounds of pressure per square inch, twice the jaw pressure of a German Shepherd. Wolves can crush large bones in just a few bites.
People write love letters to trees in Australia via email.
Tears contain a natural painkiller, which reduces pain and improves your mood.