From slime mould to space junk, and Botox to cow burps, Horizon journalists covered a wide range of stories in 2015 - and learned some curious facts along the way. Here are our favourites.
Innovation should be taught as a subject in European schools, according to Tibor Navracsics, the EU’s Commissioner for Education, Culture, Youth and Sport, who says that education can be a defining factor in the life of young scientists.
The world is losing its trees, but at what cost? Better estimates of deforestation and degradation could shed light on the amount of CO2 emitted, refine climate models and help developing countries better manage their forests.
Understanding more about how solar storms interact with the outermost part of Earth's environment, known as the foreshock, could refine space weather forecasts to predict their effects at a local level and help protect vital technology, according to Dr Lucile Turc, a space physicist at the University of Helsinki, Finland.
New measurements of carbon emissions provide better estimates of deforestation effects.
Illegal logging is a billion-euro racket but trees have traceability built into their trunks.
Better space weather forecasts will help.