To those readers that have never come across TED.com before, the site is an amazing resource of free online lectures and videos on a huge range of topics. TED's database spans everything from media to science and it is easy to find a wealth of great content using its search facility. All TED's lectures are provided by vetted, qualified experts and at present there are over 1,200 of them registered on the site – with 348 of them being specifically science lecturers. Below are a selection of some not-to-be-missed lectures available through TED.

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David Gallo: Deep ocean mysteries and wonders

Deep ocean mysteries and wonders video

David Gallo is a marine biologist specialising in “pushing the boundaries of oceanic discovery”.…