President announces new emissions, fuel-efficiency standards
http://www.nytimes.com/learning/students/pop/articles/19emissions.html President Obama announced on Tuesday that the US would impose tougher emissions and fuel-efficiency standards,…
STEM
Australian bush fires claim about 200 lives
Australian bush fires, in the state of Victoria, including the area east of Melbourne, have already killed about 200 people.
Snow keeps piling up, temps keep falling
It’s cold out there. Western Suburbs Champaign-Urbana Wednesday morning rush hour was a nightmare, and flights…
Two iguana species evolve on the Galapagos Islands
We have the following problem: On the Galapagos Islands, several species of iguanas live on land,…
What does ‘allele’ mean?
The word allele, in the study of inheritance, means a single copy of a gene. It…
What is a Punnett square?
Biologists who study inheritance patterns, genetic counselors, and you (apparently) need to bridge the gap between…
Galactosemia Punnett: recessive and fatal
Classic galactosemia is an inherited disease. The allele for normal digestion (G) is dominant, and the allele for galactosemia (g) is recessive.
Have online social networks made HS reunions obsolete?
Online social networks and "friends" have rendered high school reunions obsolete.
USA Biology Olympiad Prelims
The USA Biology Olympiad, sponsored by the Center for Excellence in Education, will be conducting the…
Differences between active and passive transport
We have this problem: Many organisms acquire necessary nutrients, such as minerals, in the form of…