This week Nasa announced its evidence of liquid water on Mars and coincidentally, Matt Damon's action flick, The Martian, hits cinemas here. The timing is uncanny.

A tax on our saltiest, fattiest foods and cutting the price of fruit and vegetables would encourage people to choose healthy options, writes Dylan Throne.

Crowd-funding sites, such as Givealittle, are built on trust. When you donate to a cause, you trust that the cause you're donating to is real, writes Rosie Dawson-Hewes.

I can never quite understand why it so often takes people so long to get around to checking their ticket, writes Amy Wiggins.

As someone who regularly makes the drive from Auckland to Tauranga and back, I would support charging trucks more to make the trip via State Highway 2, says Amy Wiggins.