Author: Adam Clare

Whale Songs to Warn Mariners of Their Presence

A system of buoys that will warn boats of the presence of whales has been put in place along a part of the east coast of the USA. The network of buoys listen for sounds that whales make and then the network will relay messages to boaters in the area to stay clear of the undersea creatures.

They have developed a cutting-edge underwater listening system to protect the creatures from their number one killer: ships. The Massachusetts Bay network can track right whales by their signature call – and in as little as 20 minutes warn mariners to slow if they’re too close.

The devices are also giving scientists unprecedented insight into how the creatures change behavior to respond to the cacophony of man-made noises in the bay.

“We need to listen to these whales” to save them, said Christopher W. Clark, director of Cornell University’s Bioacoustics Research Program, which developed the technology with Woods Hole Oceanographic Institution.

Clarks said an increasing number of pipelines, cruise ships, tankers, and construction projects are drowning out the whales’ soft calls, making it difficult for them to connect. Clark has evidence that the whales simply don’t “whoop” when the bay gets too noisy.

“In the world of right whales, we know it’s a noisy place to live,” Clark said in an e-mail. “Underwater [is] not much different than living on the tarmac at Logan.”

Bike Sharing Starts in the USA

Bicycle sharing has been around in most of the world for quite some time, now it is hitting the land of the automobile. The program is going to start in Washington DC. The symbolism here cannot be ignored.

A new public-private venture called SmartBike DC will make 120 bicycles available at 10 spots in central locations in the city. The automated program, which district officials say is the first of its kind in the nation, will operate in a similar fashion to car-sharing programs like Zipcar.

The district has teamed up with an advertiser, Clear Channel Outdoor, to put the bikes on the streets.

“There’s a lot of stress on our transit systems currently,” said Jim Sebastian, who manages bicycle and pedestrian programs for Washington’s Transportation Department. Offering another option, Mr. Sebastian said, “will help us reduce congestion and pollution,” as well as parking problems.

Grow a Heart

A team of international scientists have successfully grown heart tissue from embryonic stem cells. This is great news for people who have had all sorts of heart problems. Except perhaps a broken heart, for them perhaps a hug would work best.

More on the stem cell derived heart:

The researchers created the cells by supplying embryonic stem cell cultures with a cocktail of growth factors and other molecules involved in development.
By supplying the right growth factors at the right time, they encouraged the cells to grow into immature versions of three different types of cardiac cell.
The three cell types they created – cardiomyocytes, endothelial cells and vascular smooth muscle cells are each important constituents of heart muscle.

Hybrid F1 Racing

I’ve always thought of F1 racing as being good research and development for car companies. That line of thinking inevitably lead me to wonder why the cars still use gas when all signs point to hybrid automobiles in the future. I’ve been wondering this for years, and my brother has taken the brunt of my unrelenting curiosity around this.

Finally, F1 will be using hybrid technology in their cars.

The hybrid system that will be phased in is know as KERS, which stands for Kinetic Energy Recovery System. KERS doesn’t store as much energy as a traditional hybrid system, but it only weighs 55 pounds and the limited energy storage capacity is well suited for Formula-style racing.

The biggest difference between KERS and a regular battery-electric hybrid is that KERS stores recovered waste energy in a rotating flywheel. Instead of converting waste energy into electricity and than back into useful energy again with an electric motor, KERS simply transfers the kinetic energy to a ~5kg flywheel in the F1 car’s transmission. The energy stored in the flywheel can then be used by the driver by pushing a “boost” button.

Ontario Banning ‘Cosmetic’ Pesticides

People in Ontario will have nicer grass to roll around in next year – except on golf courses and farmer’s fields. No, I have no idea how using pesticides on a golf courses aren’t classified as a cosmetic use, although golf course might still be subject to the law (I don’t know yet). The main thrust of the legislation is to ban the sale of consumer pesticides, municipal bans could be circumvented by buying the pesticides and using them anyway. Now that loophole will be closed.

The provincewide ban is aimed at replacing a patchwork of local pesticide bylaws, but Ontario farmers will be exempt. There’s no word yet if the province also plans to exempt golf courses from the ban.

The Conservatives and New Democrats said Monday they would likely support the legislation, but they first want to make sure the ban will actually help the environment and isn’t just a public relations move by the Liberal government.

“I think our inclination is to probably support it, but at the same time we want to hear from the folks who are experts in this area, and whether they think it’s all politics or whether there is going to be some meaningful benefit to the environment,” said Opposition Leader Bob Runciman.