15.The sixteen-year-old schoolgirl from South Africa has won the grand prize at Google Science Fair for making a super absorbent material from orange peels.
19.One way of minimising the dehumidification work an AC needs to do is to expose the incoming air to a water-absorbing substance known as a desiccant.
20.They're already dried out, so honey's water-sucking properties don't kill them, and because the spores aren't growing, they aren't affected by the acidity or the antibiotic compounds.