DATABASES:

PBS Learning Media (Videos, audio clips, lessons, and more)

GreenFILE (scholarly, government and general-interest titles including content on global warming, green building, pollution, sustainable agriculture, renewable energy, recycling, and more.)

WEBSITES

BBC Science 

STEM Learning Network (from the NY Times)

National Geographic

PBS Learning Media: Science

NOVA (from the Public Broadcasting System)

Science Friday (from National Public Radio)

American Chemical Society

Science (a longstanding and wide-ranging academic journal)

Scitable (from the journal, Nature)