An open canopy allows sunlight to filter down and reach normal-scale alders, maples, sword ferns and tiny, purple wild irises.

FORBES: Days of Wine and Redwoods

"Presumably, conditions were favourable on the Bering land bridge which was more of a large filter than an open highway, " suggested Professor Poinar.

BBC: Mammoths moved 'out of America'

Some 42 countries filter and censor content out of the 72 studied by the Open Net Initiative.

FORBES: Google's 'Internet Evangelist' on the Fight for a Free and Open Internet

With the P7700, features like a noise reduction filter, tone level information, COOLPIX Picture Control and versatile bracketing functions open the door for even more creative control and freedom when capturing still images.

ENGADGET: Nikon intros flagship Coolpix P7700 for prosumers, diminutive Coolpix S01 for fashionistas