By Pep Canadell, CSIRO and Michael Raupach, Australian National University

By Mark Banks, University of Leicester

By Olaf Corry, The Open University

It is set to be one of the largest ever coordinated protests. The People’s Climate March is due to take place in cities all over the world this weekend to try and influence the UN climate summit that follows on September 23. The marches promise to be a major global event, billed by organizers as an “unprecedented mobilization”.

By Akshat Rathi, The Conversation and Flora Lisica, The Conversation

The 24th Ig Nobel prizes were announced on September 18th. The prizes annually award scientific research that “first makes people laugh and then makes them think."

By Stephanie LeMenager, University of Oregon

A frail risk analyst rediscovers his inner frontiersman in a devastating flood that hits Manhattan; an insightful rural woman glimpses the grace of god in the revelations of biological science; genetically engineered hominids who purr themselves to wellness inherit a devastated Earth.

By Steve Ellen, Monash University

Everyday life is full of mini-ethical moments. Do you own up to being under charged? Do you push in when the traffic is heavy and you’re running late? Do you hassle your kid’s teacher to get little Jimmie or Jane an advantage?

Most of us do our best, but various emotions, motives, and practicalities act to push us to our limits. Sometimes our limits are breached – mine were on a recent tour in Greece.