Bio-energy with carbon capture and storage (BECCS) is an unrealistic pipe dream that was part of the COP21 agreement. It is a multi-faceted technology that has not been tried out and it is assumed it could be deployed on a massive scale within 35-years and sustained for many decades after that. The target date of 2050 is unrealistic since Anthropogenic Climate Disruption (ACD) effects are happening so rapidly that the collapse of industrial civilization is likely to take place long before that target date is reached. The underground storage efforts began about two decades ago and have not shown the promise that was expected. Finally, numerous studies have shown that many plants, grown under natural conditions do not fare well under conditions of increasing drought, increasing CO2 concentration above certain levels and increasing temperatures. Links, to articles on this last issue, follow. Typically, these issues have not been included in hopeful presentations on the viability of BECCS.
Trees don't suck up carbon dioxide as hoped http://www.nature.com/news/2005/050822/full/news050822-7.html
Trees absorbing less CO2 as world warms, study finds http://www.theguardian.com/environment/2008/jan/03/climatechange.carbonemissions
Satellite observations show global plant growth is not keeping up with CO2 emissions http://phys.org/news/2015-12-satellite-global-growth-co2-emissions.html
Scientists just discovered a surprising new factor that could make global warming worse http://www.washingtonpost.com/news/energy-environment/wp/2015/12/09/the-surprising-factor-affecting-carbon-storage-in-the-worlds-forests/
The hidden factor that could undermine U.S. plans to cut carbon emissions http://www.washingtonpost.com/news/energy-environment/wp/2015/11/16/the-hidden-factor-that-could-complicate-u-s-plans-to-cut-carbon-emissions/
Scientists say climate change could cause a ‘massive’ tree die-off in the U.S. Southwest http://www.washingtonpost.com/news/energy-environment/wp/2015/12/21/scientists-say-climate-change-could-cause-a-massive-tree-die-off-in-the-southwest/
Increasingly severe disturbances weaken world's temperate forests http://www.sciencedaily.com/releases/2015/08/150829123817.htm
Big Trees First to Die in Severe Droughts http://www.scientificamerican.com/article/big-trees-first-to-die-in-severe-droughts/
Amazon rainforest losing ability to regulate climate, scientist warns http://www.theguardian.com/environment/2014/oct/31/amazon-rainforest-deforestation-weather-droughts-report
The slow collapse of the world’s forests on The Science Show http://radio.abc.net.au/programitem/pgQm6yo3q7?play=true
Drought Could Kill Off Many of the World's Trees http://news.yahoo.com/drought-could-kill-off-many-worlds-trees-144139591.html
NASA satellites reveal something startling about the future of food on Earth http://beta.finance.yahoo.com/news/nasa-satellites-reveal-something-startling-171000679.html?ltr=1
Tens of Millions of Trees in Danger from California Drought http://carnegiescience.edu/node/1968
It would be wise to also consider past technologies that were once considered quite hopeful but which turned out to be great embarrassments. One example was the U.S. program called Project Plowshare that had it’s equivalent in the Soviet Russia. The program involved employing nuclear explosives for various civil engineering projects.