Effective activism isn’t just picketing, petitions and marches; it also includes actions that are as subtle as sewing. Craftivist Sarah Corbett takes us through her engaging and empathetic campaign to persuade Marks & Spencer to pay employees a Living Wage.

Most people’s hearts leap up when they see the words “50% off” or “Buy One Get One Free.” Unfortunately, discounts cause us to act quickly and spend more than we should, say economist Dan Ariely and writer Jeff Kreisler.