(NECN) -Researchers at Tufts University have developed new technology that makes building a robot child's play.

Joining from the Museum of Science with more information is Michael Horn.

(NECN) - The biggest hurdle in transplants is often organ rejection -- and the side effects from anti-rejection drugs.

But, as Boston's Mass General Hospital, a new strategy is changing the approach to organ rejection drugs.

Boston Globe health and science editor Gideon Gil has the details and joins NECN to discuss them.

(NECN) - With gas prices on the rise, researchers are turning their attention to making better cars that use alternative energy.

They are finding that carbon nanotubes are showing promise for hydrogen cars.

Tim Miller joins NECN from the Museum of Science in Boston to offer some expert perspective.

Click here for the Museum of Science Web site.

(NECN) - Soon a trip to outer space may be as easy as booking a trip to Disney World. That's the dream of British Billionaire & Virgin Galactic founder Richard Bronson. On Tuesday at the Museum of history in New York, Bronson unveiled a space ship designed for space tourism. The craft looks like a cross between a corporate jet and a space shuttle. It could be ready for test flights as soon as this year.

About 200 prospective tourists have already booked their seats on the space ship at a cost of about $200,000 a piece.

(NECN) - "Fuel efficiency" in cars has generated a lot of talk, but what about the giant fuel-guzzling cargo ships? A new twist on some old technology - the kite - may do the trick. Adam Weiss joins from the Boston Museum of Science with more information.

(NECN) - Yurella and Fiorella Rocha-Arias of Costa Rica give new meaning to the terrible twos.

Yurella and Fiorella were born joined at the abdomen and chest.

They shared a liver and the right atriums of their hearts were connected.

It took nine hours of surgery and several follow-up procedures for them to be considered healthy, individual two-year-old girls.

Although separated, both are still connected emotionally, according to their mother.

Dr. Gary Hartman of Lucille Packard Children's Hospital in California performed the surgery.

(NECN) - Faced with a growing push in some states and cities to ban or limit use of plastic bags, many grocers are encouraging consumers to recycle bags or bring their own.

At least one, Whole Foods Market Inc., plans to do away with the bags altogether.

NECN reporter Brian Burnell has more on the chain's move to a more environmentally-friendly alternative to paper or plastic.

(NECN) - As fuel prices continue to rise, a small car that runs on a lot less fuel is making its way to the U.S. The pint-sized Smart car is now available in Massachusetts and 31 other states.

Herb Chambers unveiled the vehicles this morning, that have a nationwide base price of under $15,000. Smart cars get about 33-miles-per gallon in the city and 41 on the highway.

These cars are also so small that you can park perpendicular to the curb, instead of along side it.

(NECN) - On Friday's edition of "On Cape," NECN's Brad Puffer talks to the editor of the Cape Cod Times, Sean Gonsalef, about life aboard the T.S. Enterprise, a floating classroom with the Massachusetts Maritime Academy.

(NECN) - The 16th Annual Military Exposition was held at Camp Pendleton to showcase all the latest in combat gear.

From rifles to robots, if the military use it, it's on display.

It's billed as an opportunity for both Marines and manufacturers to talk to each other.

ABC reporter Maxwell Gardiner gives us a sneak peak.