Of the more than 100 videos we produced in 2017, here are seven that bring out some of the highlights of the year.
1. World Pangolin Day
On 18 February, we marked World Pangolin Day, which celebrates one of the planet's most bizarre - and endangered - species.
2. Launch of the Clean Seas campaign
In March, we launched the Clean Seas campaign at an event on the beach in Bali, Indonesia. The campaign is tackling the global challenge of plastic pollution in our oceans.
3. Launch of Young Champions of the Earth
In April, we launched Young Champions of the Earth, an initiative that aims to celebrate and support young people with outstanding potential to create positive environmental impact.
4. World Environment Day
For World Environment Day on 5 June, UN Environment's Goodwill Ambassadors Don Cheadle and Gisele Bünchen shared their favourite spots in nature and encouraged everyone to share the natural places that matter to them.
5. The Minamata Convention: getting rid of mercury
Mercury has devastating effects on human health and the environment. In September, countries united to adopt the Minamata Convention on Mercury to eliminate the use of the toxic substance in every corner of the world.
6. Lewis Pugh: swimming the message across
In November, Lewis Pugh, UN Environment Patron of the Oceans, became the first person to complete a long-distance swim in the waters of South Georgia. His pioneering swim was made to urge leaders to grant full environmental protection for the Scotia Sea surrounding South Georgia and the South Sandwich Islands, one of the world's biodiversity hotspots.
7. Champions of the Earth gala dinner
In December, we honoured seven new Champions of the Earth and celebrated the inaugural class of Young Champions. The gala evening was hosted by UN Environment Goodwill Ambassadors Dia Mirza and Ellie Goulding.
Check out more of our videos on our YouTube channel.