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ome contaminants are carcinogens. DDT is toxic to humans and can alter chromosomes. PCBs cause liver and nerve damage, skin eruptions, vomiting, fever, diarrhea, and fetal abnormalities. Along many shores, shellfish can no longer be taken because of contamination by DDT, sewage, or industrial wastes.

Dysentery, salmonellosis, cryptosporidium, and hepatitis are among the maladies transmitted by sewage in drinking and bathing water.

water pollutants are hazardous to humans as well as lesser species; sodium is implicated in cardiovascular disease, nitrates in blood disorders. Mercury and lead can

conducted by the Center for Injury Research and Policy (CIRP) at The Research Institute at Nationwide Children’s Hospital,

gymnastics has the same clinical incidence of catastrophic injuries as ice hockey

Gymnastics has one of the highest injury rates of all girls' sports."

Nationwide, an average of 27,000 children per year went to the ER for gymnastics-related injuries between 1990 and 2005.

gymnastics as a dangerous sport,"

Increasing skill difficulty introduced at younger ages, combined with long, intense practices, has raised concerns about safety.

Gymnastics has the highest injury rate of all girls' sports, according to a report from Ohio State University.

27,000 gymnasts were hospitalized annually.

We don't typically think of gymnastics as a dangerous sport. In fact, many parents consider it an activity, but it has the same clinical incidence of catastrophic injuries as ice hockey,"

There are two kinds of crocodile in Australia.

They live in the hot north of Australia.

Crocodile scales have become thick skin

In a study published in this month’s Pediatrics, researchers at Ohio State University reviewed U.S. gymnastics injuries in girls between 1990 and 2001 and found that it carries one of the highest injury rates of all girls’ sports.

12 to 14 year old girls can pull off those remarkable stunts, then more power to them.

What worries me far more than their age is the precedence it sets for future Olympics.

Will we see further bending of these rules and practices like this continue?

1. Polar ice caps meltingThe ice caps melting is a four-pronged danger.First, it will raise sea levels. There is 5,773,000 cubic miles of water in ice caps, glaciers, and permanent snow. According to the National Snow and Ice Data Center, if all glaciers melted today the seas would rise about 230 feet. Luckily, that’s not going to happen. But sea levels will rise.Second, melting ice caps will screw up the global ecosystem. The ice caps are fresh water, and when they melt into the ocean, they make it less salty, or desalinize the ocean. The desalinization of the gulf current will screw up, to put it simply, the current. It will cool the area around north-east America and Western Europe. Luckily, that will slow some of the other effects of global warming in that area. But with the stream shutdown, the whole Atlantic ecosystem could be warped.Third, all the animals in the Arctic will be in danger because of a changing habitat.Fourth, global warming will accelerate with the ice caps gone. Ice caps are white, and reflect sunlight. Some of that sunlight is reflected back into space, further cooling Earth. If the ice caps are melted, only the dark-colored ocean will be there. Darker colors absorb sunlight, further warming the Earth.

one misstep can result in serious injury.

more than 86,000 injuries from gymnastics are treated in hospitals, doctors' offices, clinics, ambulatory surgery centers and hospital emergency rooms.

26,000 children in the United States

A third of reef-building corals worldwide are threatened with extinction due to climate change and water pollution, according to the first global assessment on the marine creature by 39 scientists.

Destructive fishing and the degradation

"When corals die off, so do the other plants and animals that depend on coral reefs for food and shelter, and this can lead to the collapse of entire ecosystems," he added.

There are more than 1,000 species of bats in the world! They live on every continent of the world, except Antarctica. Bats do not live in areas where it is very hot or very cold, and there are some remote islands that are not home to bats.

Bats are mammals. They account for more than 25 percent of all the mammals on the earth! Bats are the only mammals that can fly.

Mother bats have one baby in their litter. The baby bats are called “pups.” When a pup is born, it usually has no hair and its eyes are closed. It clings to the mother bat and drinks milk from her. When the pup is about four months old, it learns to fly.

Analyzing records of patients ages 6 to 17 who were treated in emergency rooms from 1990 to 2005, the study found that an average of 5 out of every 1,000 young gymnasts each year — about 27,000 — required medical attention for injuries ranging from sprains to nerve damage.

Analyzing records of patients ages 6 to 17 who were treated in emergency rooms from 1990 to 2005, the study found that an average of 5 out of every 1,000 young gymnasts each year — about 27,000 — required medical attention for injuries ranging from sprains to nerve damage.

The Australian saltwater crocodile is one of the most aggressive and dangerous crocodiles

largest living reptile

Australian saltwater crocodiles will eat almost anything that they can overpower, including humans.

Dogs are well known for their friendliness and affection toward their owners.

companionship

Pet ownership can help to reduce blood pressure