Buzz Aldrin

Just as Mars - a desert planet - gives us insights into global climate change on Earth, the promise awaits for bringing back to life portions of the Red Planet through the application of Earth Science to its similar chemistry, possibly reawakening its life-bearing potential.

When I climb into my car, I enter my destination into a GPS device, whose spatial memory supplants my own. I have photographs to store the images I want to remember, books to store knowledge and now, thanks to Google, I rarely have to remember anything more than the right set of search terms to access humankind's collective memory.

I am a part of the old school where I feel that purity of the language should be retained. But English is a constantly evolving language where new words are being added to the dictionary, so I don't see any harm in experimenting with the language. Only poor editing standards need to be improved.

Supplying fuel for a Mars expedition from the lunar surface is often suggested, but it's hard to make it pay off - Moon bases are expensive, and just buying more rockets to launch fuel from Earth is relatively cheap.