Whether the presence of acid conditions or surface active digestive substances in the guts of such marine organisms can desorb and release contaminants in significant quantities to cause such effects, or whether such a response is to their physical presence, remains to be answered.

UNESCO: All Events | United Nations Educational, Scientific and Cultural Organization

It could also be used with a camera-based position detection system as shown above, meaning your finger's location and force could be calculated on a non-active surface like an ordinary table.

ENGADGET: Sony patent claims touch force detection via microphone

Battery efficiency, lifespan and even safety could be vastly improved, the researchers believe, by increasing the surface area of the active materials that make up the battery electrodes.

FORBES: Magazine Article

And it's believed that the high chemical reactivity of the surface is due to the deposition of chemically active gases from the atmosphere onto the surface, gases like hydrogen peroxide and ozone.

NPR: Revisiting the Viking Missions to Mars

It is extremely rare on earth as it is created during very active nuclear reactions, most commonly found on the surface of the sun, but here can only be found as a by-product of the maintenance of nuclear weapons.

CNN: Mining the moon for a nuclear future

He is an acknowledged expert in the area of federal infrastructure budgeting and finance, having had an active role in the financing of each of the last three comprehensive surface transportation reauthorization bills dating back to the Intermodal Surface Transportation Efficiency Act of 1991.

WHITEHOUSE: THE WHITE HOUSE

In an active drowning, a swimmer is at or below eye level at the surface of the water for about 10 to 20 seconds.

CNN: Water safety expert: 'Drowning doesn't just happen'