• 

  Now Playing
  Choppy waves churned by Tropical Storm Imelda hit Texas coast

  00:16
• 

  Now Playing
  Before-and-after video shows impressive cleanup efforts following tornado

  00:28
• 

  Now Playing
  Late-summer snow arrives at California ski resort

  00:19
• 

  Now Playing
  Dashcam catches a rare double lightning strike on car

  00:18
• 

  Now Playing
  Warmer weather could delay peak fall foliage

  02:03
• 

  Now Playing
  International Space Station to be visible on Sept. 19-20

  01:34
• 

  Now Playing
  Hogs explore rare winter wonderland in Australia

  00:30
• 

  Now Playing
  Lightning scatters across sky beneath rainbow

  00:17
• 

  Now Playing
  New project aims to remove plastic fishing nets from the Baltic Sea

  00:48
• 

  Now Playing
  Brad Pitt interviews NASA astronaut aboard International Space Station

  02:35
• 

  Now Playing
  Hundreds of graves moved as town prepares to be flooded

  01:32
• 

  Now Playing
  Tourists charged with 'thermal trespassing' at Yellowstone

  00:42
• 

  Now Playing
  Crews battle Francis Fire burning mountainside

  00:26
• 

  Now Playing
  Satellite imagery captures Humberto churning in the Atlantic

  00:19
• 

  Now Playing
  Video shows Spanish police rescuing flood victims by helicopter

  00:40