The scientists behind the BICEP2 (Background Imaging of Cosmic Extragalactic Polarization) telescope, last year made an extraordinary claim that they had detected gravitational waves, which are ripples in space-time. Initially hailed as the most groundbreaking discovery of the century, it later proved a false alarm: the signal was merely galactic dust.

So are we likely to ever find gravitational waves? And would they really provide irrefutable evidence for the Big Bang? Here are five common myths and misconceptions about gravitational waves.

The existence of parallel universes may seem like something cooked up by science fiction writers, with little relevance to modern theoretical physics.

But the idea that we live in a “multiverse” made up of an infinite number of parallel universes has long been considered a scientific possibility – although it is still a matter of vigorous debate among physicists. The race is now on to find a way to test the theory, including searching the sky for signs of collisions with other universes.

Since the 1980s, flagship comic-book superhero movie franchises – from DC’s Superman to Marvel’s Iron Man – have seen some major movie studio investments and, more often than not, blockbuster returns.

But significant changes in the superhero mythos in our culture indicate that their future seems bleak.

Universal Studios leads the year’s movie profits without a single superhero movie. Meanwhile, the latest Fantastic Four reboot has failed terribly.

When we talk about artificial intelligence (AI) – which we have done lot recently, including my outline on The Conversation of liability and regulation issues – what do we actually mean?

AI experts and philosophers are beavering away on the issue. But having a usable definition of AI – and soon – is vital for regulation and governance because laws and policies simply will not operate without one.

Behind the success of the new wave of location based mobile apps taking hold around the world is digital mapping.

Location data is core to popular ride-sharing services such as Uber and Lyft, but also to companies such as Amazon or Domino’s Pizza, which are testing drones for faster deliveries.

The most recent Australian suicide statistics from 2013 show that, out of the whole population, men aged 85 years and over have the highest suicide rates. While the attention these figures have garnered is a positive sign, this is hardly a new phenomenon.

Over 38 men in every 100,000 of that age group die by suicide, which is more than double the rate among men under 35. The rate is around seven times higher than in women of all ages.