Pseudogout is a joint disease that can cause attacks of arthritis. Like gout, the condition involves the formation of crystals in the joints. But in pseudogout, the crystals are formed from a salt instead of uric acid. Alternative Names. Calcium pyrophosphate dihydrate deposition disease; CPPD disease.
Every autumn, around three million Monarch butterflies will travel around 3,000 miles to inhabit the mountains of central Mexico or small groves of trees along Californiaâs coast.
Two thousand miles is a long distance to fly if you're a butterfly who lives 6 months, but it is impossible if you live 3 weeks. So they don't. About 50 years ago, scientists discovered that almost all Monarch butterflies come from a sheltered high mountain pine forest west of Mexico City.