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The world’s average temperature has increased 1°C in just the past 100 years. Extreme weather and rising seas are already causing global unrest, and many scientists believe that if we cannot curb planetary warming, it could pose an existential threat to human civilisation.

As it becomes clear that emissions reduction alone may not be enough to avoid the dire effects of climate change, a growing collective of scientists and engineers is developing technologies that could cool the planet. These range from geoengineering our atmosphere to reflect sunlight, sucking carbon dioxide right out of the air, to enlisting forests to do the job for us.

Tha teothachd chuibheasach na cruinne air èiridh 1°C sna 100 bliadhna a dh'fhalbh. 'S e adhbhar dragha a th' ann am fìor dhroch-shìde agus àrdachadh cuain, agus tha mòran luchd-saidheans dhen bheachd mura cur sinn bacadh air blàthachadh na cruinne gum bi sìobhaltas mhic an duine ann an cunnart. Mar a tha e a' fàs follaiseach nach cuir lùghdachadh truaillidh a-mhàin bacadh air cron ri linn atharrachadh na gnàth-shìde, tha co-chruinneachadh de luchd-saidheans is innleadairean a' leasachadh teicneòlas airson an t-saoghal fhuarachadh – bho bhith ag atharrachadh an àile airson frith-thilgeil solas na grèine, gu bhith a' tarraing carbon dà ogsaid às an èadhar, gu bhith a' cleachdadh choilltean.

Dubbed in Gaelic with English subtitles.