First up.The race for delegates,in order to win the Republican party's presidential nomination this year,a candidate has to get a 1144 delegates.Here's what things stood before Tuesday's primaries in Arizona and Michigan.

Former Massachusetts Governor Mitt Romney had 127 delegates,38 for former House Speaker Newt Gingrich,37 for former Senator Rick Santorum and 27 for US Representative Ron Paul.Different states award delegates in different ways.Some of them, like Arizona, have a "winner take all" primary,others like Michigan,gives out delegates to proportionally,proportional to however many votes candidates get.There were 59 delegates up for grabs on Tuesday,the results came in,after we produced today's program,but you can check them out in the spotlight section on our homepage.

 

 

The DOW Jones Industrial Average gives investors and analysts an idea of how the entire stock market is doing.When trading ended yesterday,the DOW was over 13,000 points.It was the first time in nearly four years that the DOW has finished a day above that mark.It's not technically significant though.It's more of a psychological mile stone for the economy.

 

 

Is this legit?A Geiger counter measures the intensity of earthquakes.Nope.Geiger counters measure radioactive materials. The devices are named for their inventor,nuclear physicist,Hans Geiger.

 

 

Radioactivity has been a main concern in parts of Japan after the meltdown of the nuclear power plant almost for year ago.The government set up a mandatory evacuation zone around the plant.It was 12 and half miles in every direction.Kyung Lah,was one of the journalists who were allowed a close look at the plant recently.Here's her report.

 

 

A year after these reactors at Fukushima nuclear plant exploded in a triple meltdown.Reports were reminded,this is still one of the most hazardous places on the planet.We wear head to toe protective gear.Four facial respirators and hazmat suits.And then we drove up to the world's worst nuclear accident in 25 years.

 

 

This is our first look on the ground at the reactors.This is the heart of the nuclear program in Japan.What you are seeing over my shoulder are the reactors.There are four of them.The two you see over my right shoulders,those are two reactors that exploded in the early days of this disaster.When you take a look at reactors,you can see that they have a long way to go.This is a year after this disaster and you can see that the force of the explosion crippled those buildings you can understand how, so much radiation spew from the point when you are standing here.An army of three thousands workers are now working daily in shifts to control the melt of nuclear fuel and contain the further spread of the radiation.Inside the onside crisis management building at the plant,a control center monitors its progress and safety 24 hours a day.

 

 

The highest risk we still see is if something goes wrong with the reactor,says the plant manager,Takeshi Takahashi.The plant is in cold shut down but the nuclear fuel need constant cooling and the situation is far from over.

 

 

TEPCO says the plant won't be decommissioned for at least 30 to 40 years.The challenges, evident as we drive around the Fukushima plant.Debris still mangle from the tsunami,sits untouched because of the radiation concerns.These blue tanks and these large grey ones hold water contaminated with radiation.TEPCO is continuously challenged with finding more space for the water.War conditions and safety,while they have improved since the early days of the disaster remain a constant concern.Kyung Lah, CNN, at the Fukushima Nuclear Plant.