76: Everybody's Going To Mars

China's doing it. The United Arab Emirates are doing it. The USA as well, of course they're on it as well — seems everyone is going to Mars these days. Emily takes a good hard look at each of the current Mars missions, from an orbiting spacecraft examining the red planet's weather, to a couple of rovers, one dropped to the surface by sky crane. There's even a tiny helicopter! it's all happening on Mars in 2021.