Perhaps robot fish make prime fodder for jokes, but humor aside, a team of British researchers is taking the idea of building robot fish very seriously.  Their goal is to release the robot fish in the waters north of Spain and use them to monitor pollution levels.

The fish are roughly the size and shape of a carp.  They mimic the movements of real fish to navigate the waters and they're equipped with high-tech chemical sensorous, which detect hazardous pollutants like oil leaks from vessels or underwater pipelines or mercury dumped in the water.  The robots currently cost 20,000 pounds ($29,000 USD) a piece.

The fish transmit their collected data back to shore using a Wi-Fi link.
The really impressive feature of the 1.5 meter long fish (roughly the size of a seal) is that they can navigate autonomously.  Previous models required a human operator at the remote controls, making them less practical.

Rory Doyle, senior research scientist at engineering company BMT Group says that when it comes to exploring the water and collecting data, fish-shaped robots have significant advantages over submarine-shaped designs.  He states, "In using robotic fish we are building on a design created by hundreds of millions of years' worth of evolution which is incredibly energy efficient.  This efficiency is something we need to ensure that our pollution detection sensors can navigate in the underwater environment for hours on end."

The scientists are deploying five of the fish in the northern Spanish port of Gijon next year.  If the fish hold up to the elements and prove their worth, they could soon be headed to rivers, lakes, and seas across the world, helping in the fight against pollution.

The fish do require a fair investment of money and resources, but ultimately they seem a good idea as they can help fight the accidental or intentional dumping of large quantities of chemicals into the sea, something that sadly occurs on a regular basis.

Check below for a video of the robofish in action.

As has been expected, the EPA has proposed a rule that would require industries to monitor and report their greenhouse gas emissions. Under the rule, the first data will be reported in 2011 after being collected throughout 2010. This proposal is being viewed as an important first step to regulating greenhouse gases in the near future.

The rule was introduced under the Clean Air Act and would cover 85 to 90 percent of emissions in the U.S. The gases required to be reported will include carbon dioxide, methane, hydrofluorocarbons and nitrous oxide.

A couple of industries that would be required to report emissions are auto companies, who will have to report the grams of emissions per mile for all vehicles they make and power plants, although a lot of data on power plants is already known.

For now, there is a 60-day public comment period before the rule can be enacted. While this was an expected move from the EPA, it's still a very welcome and important one. Collecting these numbers from industries and being able to regulate emissions will be necessary if major reforms are to be made.

via Green Inc.