From the world’s toughest tongue twister (“Pad kid poured curd pulled cod”) to childhood classics (“Sally sells seashells by the seashore”), tongue twisters are aplenty in the English language.

You know how to pick a ripe pineapple. And you know how to cut a pineapple into rings and wedges. Congrats! But the real problem is that once you get your hands on that perfect specimen (and go ...

While the bite from a puff adder, one of Africa's deadliest snakes, can eventually take down a rhino, the reptiles can only strike within about 5-10 cm (about 2-4 in) in front of it, which is about ...