Villa Bajo Flores in Buenos Aires. Roy Maconachie, CC BY-SA

By Séverine Deneulin, University of Bath and Roy Maconachie, University of Bath

The IPCC is clear on the dangers of fossil fuels. Pete Markham, CC BY-SA

By Simon Buckle, Imperial College London

We should know by now - don't click that link. Bill Buchanan, Author provided

By Bill Buchanan, Edinburgh Napier University

A chain is only as strong as its weakest link. Computer security relies on a great number of links, hardware, software and something else altogether: you.

The greatest threat to information security is actually people. Why strive to defeat encrypted passwords stored in computers, when those computers' human users will turn them over willingly?

Ready, set, type! Maksim Kabakou/Shutterstock

By Sally O'Reilly, The Open University

It's not all bad news for older brains. Credit: Shutterstock

By Angela Gutchess, Brandeis University

When Australian singer and TV personality Mark Holden appeared as a clown recently on Channel 7’s "Dancing with the Stars", his supposedly “bizarre” behavior sparked furious debate and complaints to the network, demonstrating the problematic nature of the clown figure today.

The clown has a long history, ranging from the court clowns of ancient Egypt and imperial China, and trickster figures of Native American cultures, through the “sanctioned fool” of Renaissance drama and zanni of the commedia dell arte, to mainstay of the circus in the 19th century.