A guide to aerodynamics that has five fabulous flying machines to make. It includes two specially designed paper planes, a rubber-band-powered single-prop plane, a unique, superspeedy twin-prop plane and a vertical take-off helicopter.

HORRIBLE SCIENCE: DANGEROUS DISEASES coughs up all the disgusting details of the squelchiest sicknesses that mankind has suffered through. From the cruel common cold to shocking smallpox, see what happens when your body is attacked by germs! Find out which brave nurse drank diarrhoea, which scientist used eyeballs as food for bacteria, why deadly cholera makes your skin turn blue and how munching maggots can cure flesh diseases! With sickening sick notes, dreadful disease facts, and lots of vicious viruses to make you vomit, it'll...