• 

  Now Playing
  Road completely torn apart by flash flooding in Michigan

  00:19
• 

  Now Playing
  Fast-moving lava flow races downhill from Kilauea's Fissure 8

  00:18
• 

  Now Playing
  Adorable moment shows boy and bear happily jumping for joy together

  00:12
• 

  Now Playing
  Drone captures dozens of crocodiles lounging around in the sun

  00:21
• 

  Now Playing
  Severe flooding causes major damage in the Midwest

  01:00
• 

  Now Playing
  Father's Day heat wave hits Chicago

  01:44
• 

  Now Playing
  Countdown to Summer: Hot car dangers

  01:00
• 

  Now Playing
  Why learning about astronomy matters

  01:00
• 

  Now Playing
  North Carolina man runs inside after close lightning strike

  00:21
• 

  Now Playing
  Watch violent winds whip porta-potties into air, causes ‘poopnado’

  00:11
• 

  Now Playing
  Fierce storm lashes South Dakota with strong winds and frequent lightning

  00:23
• 

  Now Playing
  Swirling Milky Way rises over tree in Western Australia

  00:24
• 

  Now Playing
  Runaway bulldozer causes major damage to Pennsylvania home

  01:00
• 

  Now Playing
  Countdown to summer: Tips to avoid cold water shock

  01:00
• 

  Now Playing
  Interested in astronomy? Here's how you can get involved

  01:00