Prev

light-years


units for measuring distance in space; a light-year is the distance that light travels in a year

The closest galaxy to ours, the Andromeda galaxy, is about 2.5 million light-years away.

light-years

iconic


famous or of great importance

A herd of bison is an iconic image of the western United States.

iconic

reserves


protected areas where animals can live and breed safely

The best place to see endangered lemurs in the wild is in one of the reserves in Madagascar, an island nation of Africa.

reserves

elusive


hard to find or catch

After hours of searching, the scientists finally spotted the elusive panda hiding behind a tree.

elusive

majority


more than half

The majority of the students in the class take the bus to school. Fewer than half of them walk to school.

majority
Next
Problem loading video..
 
 
 
May 1, 2017
Apr 17, 2017
Apr 10, 2017
Mar 27, 2017
Mar 20, 2017
Mar 6, 2017
Feb 20, 2017
Feb 13, 2017
Jan 30, 2017
Jan 16, 2017
Jan 2, 2017
Dec 12, 2016
Dec 5, 2016
Nov 21, 2016
Nov 7, 2016
Oct 24, 2016
Oct 10, 2016
Oct 3, 2016
Sep 19, 2016
Sep 12, 2016
Sep 5, 2016
May 9, 2016
Apr 25, 2016
Apr 11, 2016
Apr 4, 2016
Mar 21, 2016
Mar 14, 2016
Feb 29, 2016
Feb 22, 2016
Feb 8, 2016
Feb 1, 2016
Jan 18, 2016
Jan 4, 2016
Dec 7, 2015
Nov 23, 2015
Nov 16, 2015
Nov 2, 2015
Oct 26, 2015
Oct 12, 2015
Oct 5, 2015
Sep 21, 2015
Sep 14, 2015
Sep 7, 2015