Cuisine varies greatly around the world, but the basic ingredients that sustain humans are pretty similar. We eat a lot of corn, wheat, rice and other simple crops. Read on to find out which foods top the list of most important worldwide, listed by annual production and average yield in 2008.
Howler monkeys are widely considered to be the loudest land animal. According to Guinness Book of World Records, their vocalizations can be heard clearly for 3 mi (4.8 km). The function of howling is thought to relate to intergroup spacing and territory protection, as well as possibly to mate-guarding.
What they had actually heard was a series of volcanic explosions emanating from another small island in the Indian Ocean, Krakatau (also known as Krakatoa), which lay nearly 5,000 km (3,000 miles) to the northeast. The noise from these explosions ranks as the loudest and farthest traveled sound in recorded history.