Experts say they think the footprints were left mainly by a group of herbivores, which were followed by a few carnivores. Scientists fear disappearance of ice from Hudson Bay A group of scientists studying northern Canada estimates the Hudson Bay could be ice-free by 2050. The six scientists have been touring communities around the bay and asking residents about changes they've witnessed to their environment. They are hearing from hunters that spring is getting warmer, which means getting out on the ice is more dangerous now than it used to be. Peter Scott, scientific coordinator at the Churchill Northern Studies Centre and a member of the group, says warmer temperatures in the north would affect the migration habits of marine life and might leave the region open to diseases that can't survive in cold temperatures.
British scientists say they have uncovered the first conclusive evidence the earth is warming.
By comparing data from two satellites, which orbited the earth 27 years apart, they discovered there is much less radiation escaping the earth's atmosphere now than previously. The researchers say they found evidence of increases in carbon dioxide, methane, ozone, and two chlorofluorocarbons, refrigerants blamed for ozone depletion. The findings, which are reported in the journal Nature, show less radiation was escaping from the Earth in 1997 than in 1970. This means the gases are being kept in the atmosphere, and are trapping the Sun's heat. The corn contained a gene variety called StarLink, which has not been approved because of fears it may cause allergic reactions in people who eat it.