Human evolution much slower than supposed

Human beings are evolving much more slowly than previously believed, new research shows - maybe at just a third of the rate.

Wifi much slower than fixed broadband

Wifi networks are 30 percent slower than fixed broadband connections, according to a new report, because of phyical barriers and interference from other devices.

Ice caps melting far slower than believed

The Greenland and West Antarctic ice caps are melting at half the expected rate, according to a joint US-Dutch team.