REMOVING GREENHOUSE GASES FROM THE ATMOSPHERE

• I believe that some GHG-removal activities could have a part to play in meeting emissions reduction targets for a more stable global climate system and healthier oceans.

  Sir Richard Branson

• The good news is we know what to do. The good news is, we have everything we need now to respond to the challenge of global warming. We have all the technologies we need, more are being developed, and as they become available and become more affordable when produced in scale, they will make it easier to respond. But we should not wait, we cannot wait, we must not wait.

  Former Vice President Al Gore

• We are the generation fated to live in the most interesting of times, for we are now the weather makers, and the future of biodiversity and civilization hangs on our actions.

  Prof. Tim Flannery

• Imagine a giant asteroid on a direct collision course with Earth. That is the equivalent of what we face now [with climate change], yet we dither.

  Dr. James E. Hansen

• Just look at our own bodies and medicine. We don't understand everything and there's no point pretending we do. It's far too complex. But we can still take preventative measures. And the same applies to the Earth.

  Prof. James Lovelock

• We are artificially increasing the quantity of gases in the atmosphere - carbon dioxide, methane, nitrous oxide etc. - which have the effect of trapping more of the earth's heat and increasing the temperature at the surface. The facts are not in doubt. The questions are of degree and extent. One of the achievements of Rio was a Climate Convention which at least - and at last - recognized the hazards. [after the 1992 Rio Earth Summit]

  Sir Crispin Tickell

• We would argue that all of the ideas in the Earth Challenge will only ever work as an additional component [in the fight against global warming], alongside the continued and unrelenting decarbonisation of our human activities.

  Dr. Alan Knight, OBE – Non-Executive Director – Virgin Earth Challenge

• Each negative-emissions concept has varying challenges and opportunities, but these issues need to be explored and discussed if everybody’s work is to sustainably advance.

  David Addison, Manager – Virgin Earth Challenge