Will Twitter become a big TV screen?

New research from scholars at Columbia Business School and the University of Pittsburgh questions the sustainability of Twitter, the social network that has more than 500 million registered users. The research was recently published in the journal Marketing Science.

Does Facebook make you weak-willed?

Beware: using Facebook can make you eat more and get into debt - but still feel really pleased with yourself, researchers say.

Stem cell injections reverse aging in mice

Mice bred to age too quickly lived up to three times as long when injected with stem cells from younger mice, raising the possibility that the normal ageing process could one day be slowed.