MS-LS2-4
Construct an argument supported by empirical evidence that changes to physical or biological components of an ecosystem affect populations.
- Environment
Deep-sea fish show signs of exposure to pollution
A new study suggests deep-water fish may have health problems linked to human pollution. Eating these fish may expose diners to the same pollution.
- Animals
Finding out why birds are out of range
Sometimes people see large numbers of birds outside of their normal range. A student examined how to predict these excursions.
- Animals
Cats and foxes are eating up Australia’s mammals
Since the arrival of Europeans in Australia, a startling number of mammal species have disappeared. A new study puts much of the blame on cats and foxes introduced by the early settlers.
- Health & Medicine
10 things to know about measles
Many people think that the measles vaccine wiped out the disease — at least in the United States. It hasn’t. And people who were never vaccinated face the primary risk of getting this very serious disease
- Animals
Hellbenders need help!
Hellbenders already face threats such as habitat loss, pollution and disease. But climate change could make matters worse. And the problems facing hellbenders could spell trouble for more than just these giant amphibians.
- Microbes
Ongoing Ebola outbreak traced to hollow tree
Scientists suspect the current Ebola outbreak started with bats that lived in a hollow tree in Guinea. The outbreak's first victim, a two-year-old boy, often played in the tree.
- Health & Medicine
New germ fighter turns up in dirt
Scientists have found a compound in soil that can kill the microbes that cause anthrax, tuberculosis and other diseases.
- Ecosystems
Scientists say: Biomagnify
Chemicals in the environment can build up in an animal’s tissues. Predators who feed on these animals can accumulate more and more of the pollutants, a process known as biomagnification.
- Animals
Picture This: Winter brings white noses
White-nose syndrome, caused by a fungus, has killed millions of bats in the eastern United States. Now, scientists show that the disease comes and goes, by season. The finding could help scientists more effectively target any treatments.
- Environment
Spidey sense: Eight-legged pollution monitors
Spiders that prey on aquatic insects can serve as sentinels that naturally monitor banned chemicals that still pollute many rivers across the United States.
- Microbes
How ‘bugs’ in our bellies impact our health
Gut bacteria can play a powerful role in human health, new studies show. In one, bacteria turned a nutrient in red meat into a chemical that boosts the risk of a heart attack. Another study shows that our genes play a role in whether we are fat or thin, probably by affecting which bacteria prefer to live in our intestines.
-
Food can make an appetizing science fair project
Many students think they need a laboratory or special equipment for a winning research project. But finalists at the Broadcom MASTERS competition showed food-based research may require little more than your home kitchen
