Climate experts believe that we can only change global warming by ‘geo-engineering’. The reduction of CO2 emission failed, so we have to start thinking about technological solutions to change the global warming, like gigantic mirrors in space against the sun. A growing number of experts think that we have to investigate these options as a last remedy. We could squirt sulphate particles in the atmosphere to reflect sunlight. Or we could put giant tubes in the ocean that can bring the CO2 stuffed surface water to deeper layers. Problem: you can resist the effects of greenhouse but that doesn’t take away the problems. Half of the climate scientist believes that it’s necessary to find a back-up for the worst case scenario in global warming. Especially since 12 years after the Kyoto alliance, the emission of greenhouse gasses only increased.
 
Professor John Lathan from the National Centre for Atmospheric Research reacts: “that’s why we need to investigate plans to stabilise earth’s temperature long enough to develop alternative, clean energy. One example of such geo-engineering is to squirt sulphate parts in the stratosphere, like nature does when a volcano erupts. The parts reflect sunlight and reduce warming. It’s is possible to imitate this volcano eruption but then the side-effects need to be considered carefully, such as acid rain. Another example is to pump vapour in the air to create clouds over the ocean that also will reflect sunlight. But also in this case, research will be necessary to find out the technological difficulties and the practical effects.
 
More ambitious is the plan to put a huge line of mirrors between earth and sun, which brings the immediate question of who will pay for this and who will check these mirrors. Then ,there’s also the plan to build tubes in the ocean that will bring down the surface water that contains dissolved CO2. Critics of this plan are afraid that it will also bring CO2 from the bottom up to the surface. Finally, we could add iron to the seawater to stimulate the grow of plant plankton. These small flora absorb carbon dioxide that will sink to the bottom. Experiments showed some successes, but there’s a risk that sea animals will eat the extra plankton. The question remains: should we invest so much time and energy in these solutions, that actually aren’t real solutions, but a delay of the problem.