News
- Humans
Online comments maybe not total waste of time
Conversations on news sites reveal patterns in how information and ideas spread.
- Space
Cost overruns and delays add up to $6.5 billion for NASA’s next-gen space telescope
A new report finds that the James Webb Space Telescope, the successor to the Hubble Space Telescope, will cost NASA at least $1.5 billion more than the $5 billion the agency estimated in 2008 and, to meet its scheduled 2015 launch date, will need $400 million of that additional money over the next two years.
- Earth
Warm spell spurred tropical biodiversity
The number of plant species exploded in South America as atmospheric carbon dioxide, and temperatures, rose abruptly about 56 million years ago.
