Dark shadows in the water near Florida body borders may be sharks.
EPIC sand sculptures takeover San Diego beach
Nine-year-old girl dies in sand cave collapse
"Iconic" sinkhole won't be around much longer
Toxic (and stinky) algae bloom growing
Feral cat shuts down entire school
"Threatened" coral species get helping hand
'Beauty. Power. Fear.' Marie from the ISS
Dust storm causes 50-car pile up
California rattled by strong aftershocks
The science behind amazing firework displays
Dog saves kids from swarm of bees
2005: Katrina wipes out New Orleans
'Where the powerful storms now live'