Judging criteria
The Sustainability Challenge is judged on the quality of the messages featured in the videos and how the messages are presented. Simplicity is no barrier and videos filmed on mobile phones or tablets are warmly encouraged.
Social media responses to the videos are taken into account during the judging process and must include the hashtag #TSLBiodiversity2021. Viewers are invited to show support for their favourite videos on YouTube.
Key dates
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8 September 2020
Registration opens for 2021 Challenge
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28 February 2021
Deadline for Challenge video entries
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9 April 2021
Top entry winners from each age category notified
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12 April 2021
Top videos will be announced on our website and social media for the public to share their views and help judges select the overall Sustainability Challenge Trophy Winner
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1 May 2021
Announcement of 2021 Challenge video winners