You'll never see another teenage tennis champ – here's why

Lleyton Hewitt won the Brisbane International last weekend at the age of 32. Roger Federer and David Ferrer, two of the world's top ten players, are over 30. And 35-year-old crowd favourite Tommy Haas still maintains a world ...

Google alters algorithm to combat abusive sellers

Google is tweaking its algorithms after an online eyeglass merchant managed to get his site listed at the top of search rankings by being deliberately rude to customers and sparking complaints.

Hyena population recovers slowly from a disease epidemic

Infectious diseases can substantially reduce the size of wildlife populations, thereby affecting both the dynamics of ecosystems and biodiversity. Predicting the long-term consequences of epidemics is thus essential for conservation. ...

New model offers physics-inspired rankings evaluation

The world is rife with rankings and orderings. They show up in tennis—as in the French Open, which ends with a final ranking of champion players. They show up in pandemics—as when public health officials can record new ...

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