Explained: Hydrophobic and hydrophilic

Sometimes water spreads evenly when it hits a surface; sometimes it beads into tiny droplets. While people have noticed these differences since ancient times, a better understanding of these properties, and new ways of controlling ...

Changing the way we fly

An airplane roaring down the runway and into the air is a familiar sight to most travellers today. In fact, this image has not changed much in 50 years. While significant advances have been made in terms of fuel economy, ...

page 2 from 4