In 16 species they found that the spleens of individuals killed by cats were significantly smaller than those of individuals killed accidentally.

ECONOMIST: Survival of the fittest, and oldest

As a result, tumours in mice that were fed the extract - dimethyl fumarate (DMF) - were significantly smaller than those in mice given a normal diet.

BBC: NEWS | Health | Food extract boosts cancer drug

Because the government subsidies to purchasers of health insurance in the small-group market are significantly smaller than those in the individual market, I estimate that another 10 million people, the approximately two-thirds of the market that is low- or average-risk, will see higher insurance bills for 2014.

WSJ: Daniel Kessler: The Coming ObamaCare Shock

Because iOS may have a smaller pool of users, but those users pay significantly more than Android users.

FORBES: Mobile Advertising In A Nutshell, Android For Show, Apple For Dough