Some fascinating predictions by futurist Ray Kurzweil:

Within 10 years, there will be a drug that allows you to eat whatever you want and not gain weight.

Within 5 years, solar power will be cost-competitive with fossil fuels.

Within 20 years, all our energy will be generated from clean sources.

Within 15 years, life expectancies will be rising faster than aging rates.

Let's hope Kurzweil is correct on just one of those predictions.