A pioneering new drug that could eventually help people regrow missing or damaged teeth has begun clinical trials in Japan. If successful, the "groundbreaking medication" may be a "game-changer for ...

Almost all animals have symmetrical bodies. Bilateral symmetry is almost universal in all animals and is only very rarely ...

Cats have long been the subject of tall tales (nine lives, really?) and superstitions. How many of these cat myths did you ...

The rainforest has many layers There are thousands of tree species in the Amazon rainforest, many of which grow to between 80 and 100 feet tall, developing huge networks of branches that make up the ...