Chief bulwark for the Ospreys against the waves of red shirts was open-side Marty Holah, regularly disappearing into a ruck to turn over Scarlets possession, while Alun Wyn Jones and Collins tackled their hearts out.

BBC: Scarlets 14-21 Ospreys

Even something too small to emit visible light will probably give off radio waves and infra-red radiation (Jupiter does).

ECONOMIST: X marks the spot

Amid waves of grass in red and green and the hush of the tide, the sun set over the hills.

WSJ: Four Days Through Friesland

When swimming, watch out for the red warning flags or ask a lifeguard as the waves can be harsh.

BBC: Rio��s beach culture, posto by posto

The beach was closed, there were red flags out, 12- to 15-foot waves.

FORBES: Larry Ellison

In the case of lidar, the waves are in the form of an infra-red laser beam.

ECONOMIST: Forest conservation

On a notoriously violent patch of the Atlantic Ocean north of Scotland and 160 kilometers west of the Shetland Islands, where winds howl at 80 kilometers an hour and waves can run 30 meters high, a brutish red vessel rolls in a mounting breeze.

FORBES: Going deep