At TFL, we're making journeys safer for everyone, and that includes improving safety on London's roads.

That's why we and London boroughs are lowering more speed limits to 20 miles per hour,

because 20 miles per hour roads have already reduced collisions resulting in deaths or

serious injuries by 24%. That is how we're making journeys in London safer and brighter for everyone.

Such TFL improvement plan to the Mayor of London and TFL every journey matters.

This is CBSI in the world. I'm John Batch with my colleague Charles Pelagrino,

the author of To Hell and Back, last train from Hiroshima. The first bomb has dropped.

The observation from the Inola Gay and from the weather,

plane that was flying up beside it is both breathtaking and strange to the men who dropped the bomb

and to the people who are learning about the effects of the bomb in Washington.

The month before in July 1945, the President of the United States wasn't the Potsdam Conference,

along with his allies Winston Churchill and Joseph Stalin, and they're looking at a post-war period.

Stalin knows about the bomb, but pretends that he's surprised when Truman tells him

after the word comes that the test is successful in New Mexico. The bomb is underway,

and Stalin says something flippin-like. I hope it's a good bomb or a big bomb. That's July of 1945.

We're now in August of 1945. The President's back. They get the information that the first bomb

has been effective. Charlie, did they know what they meant when they set effective?

Did they know about the black rain? Did they know about the breadth of the destruction?

They knew that the center part of Hiroshima had basically disappeared there,

and reconnaissance flights before and afterward, they knew that the wooden buildings would probably

be set afire, that it might create a firestorm. They knew everything wouldn't be knocked down,

and all the factories would be destroyed. One of them aboard Jacob Bezier, he had looked down

...