Sean Nash's Videos (10)

Global study of salmon shows: 'Sustainable' food isn't so sustainable

Popular thinking about how to improve food systems often misses the point, according to the results of a three-year global study of salmon production systems. Rather than pushing for organic or land-based production, or worrying about simple metrics such as "food miles," the study finds that the world can achieve greater environmental benefits by focusing on improvements production and distribution.

Penguins and sea lions help produce new atlas

Recording hundreds of thousands of individual uplinks from satellite transmitters fitted on penguins, albatrosses, sea lions, and other marine animals, conservation scientists have released the first-ever atlas of the Patagonian Sea -- a globally important but poorly understood South American marine ecosystem.

Marine ecosystems get a climate form guide

The first-ever Australian benchmark of climate change impacts on marine ecosystems and options for adaptation is being released. The Marine Climate Change Impacts and Adaptation Report Card for Australia, and an accompanying website, will provide a biennial guide for scientists, government and the community on observed and projected impacts of climate change on marine ecosystems.

Fish food fight: Fish don't eat trees after all, says new study

Recent theories suggesting that half of fishes' food comes from from land-based ecosystems may not hold water. Experiments show that algae, not land-based matter, is needed to build healthy and fertile aquatic organisms.

California's ancient kelp forest

The kelp forests off southern California are considered to be some of the most diverse and productive ecosystems on the planet, yet a new study indicates that today's kelp beds are less extensive and lush than those in the recent past.