New Orleans, Louisiana, was established as part of the French Empire in 1718.

    Its location on the east bank of the Mississippi River gave it control of the American hinerland and it became strategically important to many nations. It was transferred from France to Spain, returned to France, and finally sold by Napoleon to the United States in 1803. The city was the site of a famous battle fought in 1815 between the British, who hoped to control it, and the Americans under General Andrew Jackson.

    The riverbed of the Mississippi is constantly silting（淤积）and the river is now actually higher than the city. Levees hold back the river and giant pumps are used to move water from the city into the river.

    Although New Orleans has been a part of the United States for almost two centuries, its population takes great pride in its French heritage. Louisiana still retains parts of the Code Napoleon which, for many years, was its only law.

    New Orleans is carefree city and it boasts its hot, spicy Creole seafood and its native Dixieland Jazz. The Jackson Square neighborhood maintains its French colonial homes and in other sections are pre-Civil War mansions. Visitors are surprised to find that behind this interesting surface of yesteryear is a busy industrial and port city. Grain and coal come from the Midwest and foreign goods are unloaded here. New Orleans is no longer a sleepy Southern town—but it's still fun to visit.

    New Sciencenter Featured Exhibition: Ocean Bound!

    Opening weekend

    Member Preview: Friday, February 3, 6—8 pm

    Public Opening: Saturday, February 4, 10 am — 5 pm

    Start a journey through watersheds to see how everyone's actions affect the health of our ocean. Enjoy interacting with 3D watershed models, piloting a full-size submersible from mountain stream to ocean, guiding water safely through a hazardous maze, diverting pollutants as they travel through storm-water drains, playing with early education exhibits inside a clubhouse, and many more engaging interactive exhibits.

    Showtime! Plant and Animal Double-Takes

    Saturday, January 21, 2 pm

    Have you ever looked at a living thing and wondered, Is that a plant or an animal? Join Sciencenter educators Julie Yurek and Sarah Cox to look into species that make you take a second look. Explore the surprising differences between these plants and animals.

    Showtime! Solar Power Goes Nano

    Saturday, February 11, 2 pm

    Did you know scientists are using nanotechnology to store solar energy? Learn about solar power and the emerging use of hydrogen fuel cells. Justin Sambur, NSF Postdoctoral Research Associate at Cornell's Department of Chemistry and Chemical Biology, will demonstrate a model race car that uses a hydrogen fuel cell kit powered by solar energy.

    Special Showtime! Presentation: Animal Adaptations for Winter

    Wednesday, February 22, 1 pm

    Have you ever wondered how animals survive in winter? Join Emma Brofsky of Cornell's Naturalist Outreach Program to explore animal adaptations for winter and learn how biology helps animals cope with cold weather, food shortages, and limited habitats. Touch animal pelts and do a hands-on activity on animal insulation.

    An old friend from California called from the airport to tell me that he had arrived. I was not able to leave the office, but I had made plans for his arrival. After explaining (解释) where my new house was, I told him that I had left the key under the doormat (门垫). Since I knew it would be pretty late before I could get home, I suggested that he make himself at home and help himself to anything that was in the refrigerator(电冰箱).

    Two hours later my friend phoned me from the house. At the moment, he said, he was listening to some of my records after having had a delicious meal. Now, he said, he was drinking a glass of orange juice. When I asked him if he had had any difficulty finding the house, he answered that the only problem was that he had not been able to find the key under the doormat, but luckily, the living room window by the apple tree had been left open and he had climbed in through the window. I listened to all this in great surprise. There is no apple tree outside my window, but there is one by the living room window of my next door neighbor's house!

    Once, a lioness and her cub were hunting in the jungle. The baby asked its mother, "Mother, why are we hunting when a deer is already at home?”

    The mother said, "My love! We can' t eat that deer because it has surrendered (投降) himself seeking our help. He is wounded and helpless. We must help him.”

    The baby cub was surprised and questioned again, "Why so? That's our food, we can eat it.”

    “Honey, you are right! It's our food and we can kill him in any second but do you think he deserves to be killed when he has come to-us for protection?”

    The baby cub couldn't understand her mother's vulnerability(软弱). It kept quiet and paced with its mother. At last, they didn't get anything and came back to their cave.

    The deer, on the other hand, was terrified of his own decision of taking shelter in the cave. Unfortunately he had no choice! He was attacked by a hunter and somehow managed to escape. While running for his life, he saw the cave and without a second thought entered it. He had already got a shot from the hunter. When he realized he was in the lions cave, he gave up the idea of running back again. The deer gazed at the lioness with a pitiful look, tears rolling down He sat there as if he urged for the mercy of the lioness.

    The lioness came closer to the deer, smelled it and slowly moved out of the cave with her cub.

    When the lions came back, the cub asked its mother to kill the deer again. But the lioness was firm on her decision. She said, "Sweetheart! We can-manage one night without any food. Tomorrow, I would definitely fetch out some food for you.”

    The cub said nothing, grunted(嘟哝）a little.

    When the cub slept, the lioness whispered to the deer, "Run, away from this area because I doubt if I could save you any longer if the next time situation demands!"

    The deer looked at the lioness with gratitude and slowly walked away from the cave.

    The Top 4 Restaurants of 2018

    No. 4

    Kuya Ja's Lechon Belly (4 stars): 5268-H Nicholson Lane, Rockville, Md. 240-669-4383. kuyajas. com.

    Open: Breakfast, lunch and dinner Wednesday through Monday; breakfast and lunch Tuesdays.

    Prices: Sandwiches, bowls and combination meals, $ 6.99-$ 12.59.

    Sound check: 74 decibels（分贝）/ Must speak with raised voice.

    No. 3

    Little Havana（41/2 stars): 3704 14th St. NW. 202-758-2127. littlehavanadc.com.

    Open: Dinner daily.

    Prices: Sandwiches and mains $ 9-$ 25.

    Sound check: 70 decibels / Conversation is easy.

    No. 2

    Three Blacksmiths (41/2 stars): 20 Main St., Sperryville, Va. 540-987-5105. Three black smiths.com.

    Open: Dinner Thursday—Saturday.

    Prices: Small plates $ 5 - $ 20, large plates and family-style plates $ 24 - $ 94.

    Sound check: 81 decibels / Extremely loud.

    No. 1

    Momofuku（5 stars): 1090 I St. NW. 202-602-1832. ccdc.momofuku.com.

    Open: Lunch Monday through Friday, dinner daily, breakfast Saturday and Sunday.

    Prices: Small plates $ 5 - $15.

    Sound check: 75 decibels / Must speak with raised voice.

    The spine (脊柱) stands at the center of your health, providing your body with structure and support. It also contains a major collection of nerves that deliver electric signals from the rest of the body to your brain. So it's important to take care of it.

    Staying in a good position is one of the most important things to keep your spine healthy. A proper position means standing or sitting while keeping your spins straight, except for its natural bending. Positions play a vital part even when you're asleep. Stomach sleeping is far from a good idea. Many people prefer sleeping on their side, which is in the interests of their spine. Sleeping on your back has lots of benefits yet can cause lower back pain and put some pressure on your spine.

    Staying still for too long — even if your position is good — can be hard on your back. Especially if you work at a task most of the day, it's important to get up and stretch (伸展) periodically. Strength exercises with light weights like push-ups can also help by strengthening the muscles. However, don't overdo the exercise, as repeated movements can hurt the muscles around the spine, as trying to lift heavy weights with poor technique.

    Vitamins also affect the health of your spine. In particular, vitamin B and omega-3 fatty acids help keep nerves healthy. Another important part is vitamin D, which is required for strong bones. Vitamin D can come from some foods, but it's also absorbed from sunlight, so it may help to do some exercises outside. At last, many of the actions necessary to keep a spine healthy are similar to those used to protect your health in other ways. So protect your back, and the rest of the body will benefit.