The Making of the Atomic Bomb by Richard Rhodes. Pulitzer prize winning book too.
There are lots of math sites on line. I'd suggest a few, but I don't know what kind of math you need help with.
By not having sex.
The one soon to be established to tell us how to teach our kids in local schools. It is coming soon. The only way that agency will succeed is by lowering the standards so that all kids will make the grade. Combine that with political correctness and the next generations will be doomed to mediocracy.
I don't hate anyone because of their religion or lack of. Peace be with you and yours.
I told my future wife after we officially met, "I really like you. I'd love to get to know you better. When you get rid of your boy friend, call me." She did - the very next day. On our first date later that week, I asked her how many kids she wanted. She said, "Three." I said, three was a bad number because it takes too long to get seated at restaurants. Besides, the kids would always be fighting about who had to sit in the middle of the back seat. How about two instead? She told me years later it was then that she knew we would get married. Seventeen years later we are still married and we have two boys.
Sounds like someone wants us to do homework for them.
Neither Lisa, nor her sister, have made a decision yet.
Political correctness has cost people jobs, licenses, and political bases. It also dilutes stereotypes to a grayness that would otherwise be a colorful world. It is a shame. I prefer bright colors to that of shades of Whiteness and Blackness.
According to WebMD:
The liver is a large, meaty organ that sits on the right side of the belly. Weighing about 3 pounds, the liver is reddish-brown in color and feels rubbery to the touch. Normally you can't feel the liver, because it's protected by the rib cage. The liver has two large sections, called the right and the left lobes. The gallbladder sits under the liver, along with parts of the pancreas and intestines. The liver and these organs work together to digest, absorb, and process food. The liver's main job is to filter the blood coming from the digestive tract, before passing it to the rest of the body. The liver also detoxifies chemicals and metabolizes drugs. As it does so, the liver secretes bile that ends up back in the intestines. The liver also makes proteins important for blood clotting and other functions.
I know there are ducts, and the bile empties into the ducts that fill the gallbladder before entering the small intestine near the stomach, but I don't remember ever seeing a valve like the heart has. I'd double check Grey's Anatomy, but I don't think they are valves in that sense.