Insect antennae, also called "feelers", do much more than just feel. They help the insect feel objects, monitor motion, and detect smells. They let the insect hear, sense moisture, and feel heat. They can also interpret a variety of chemical cues.

Alex scored eight points for his baseball team. He struck out five players. He hit two home runs and drove in six more runs. He also did some great fielding, catching three fly balls and single-handedly closed out one inning. Alex was declared Most Valuable Player of the game.

Dogs are often called man's best friend, but they also help humans in many ways. Some dogs hunt or retrieve while others guard their owners and property. There are also those who guide the blind or assist the hearing impaired. And still, there are those who can detect oncoming seizures and other medically related issues in their owners.

Before the Europeans came, women in North America had more power and freedom than women in Europe or Asia. Women owned their own houses. They could get divorced if they wanted to. They didn't lose their children if they did get divorced.

People in early North America ate only wild foods that they could hunt or gather. Inuit people ate lots of fish and seal meat and gathered seaweed. Pueblo people ate cactus fruit and pine nuts and hunted rabbits and birds. Cree people ate fish with wild rice that they gathered in the wetlands around the Great Lakes.

Thomas Alva Edison is remembered because of the huge number things he invented which are still used today. He invented the light bulb. The storage battery was invented by him. Motion pictures (movies) were another of his inventions.

Martin Luther King Jr. was one of America's most important civil rights leaders. He inspired many with his famous, "I Have a Dream" speech. He believed in using non-violent methods to achieve his dream of racial integration. He was assassinated at age 39.

Native people in early North America liked to play games. Their favorite games were played with a stick and a ball, like lacrosse. In lacrosse the rule is that you can't touch the ball with your hands. You catch the ball in a net on the end of a stick and use the stick to throw the ball.

Not all plants grow in the same way. Some plants grow and reproduce in one year and are called annuals. Some plants grow and reproduce in two years and are called biennials. Other plants grow and reproduce for many years and are called perennials.

Teeth can tell you what kinds of food a mammal eats. Plant eaters (herbivores) like deer have large, flat molars for grinding plants. Animals that eat both plants and meat (omnivores) have strong canines and molars for tearing and grinding foods. Animals that are meat eaters (carnivores) have canine teeth for cutting and tearing.

Animals have defenses against being eaten, and so do plants. Plants like milkweed have strong chemicals that can make animals sick. Poison Ivy has oils in its leaves that will give animals an itchy rash. Blackberries have sharp thorns all over the plant.