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Study Center

Answers from our experts to important scientific questions
Submit a question Our editors will select questions from those submitted and post their answers here.
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Medicine:
Forensic science

- How do DNA tests establish, or exclude, identity or genetic relationships? How accurate are they?

Infectious diseases/epidemiology

- Could you explain the concept of the ELISA diagnostic test and how it works?

- What are prions and what do they have to do with mad cow disease?

Medical science - general

- Does everybody dream?

- What are superconductors and how are they fabricated?

- Is the cause of Alzheimer's disease known?

- Why do we have different phases of sleep?

Noninfectious diseases

- Is the cause of Alzheimer's disease known?
Sample questions from Q & A:

Bioscience
Q: What new treatments for AIDS are in use especially in Africa?

A: Fixed-dose, single-pill therapy that combines several anti-HIV drugs may be the future of AIDS therapy in the developing world. Questions concerning patents need to be answered.

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Bioscience | Developmental biology
Q: Why are neurons amitotic?

A: With the exception of the sensory neurons of the olfactory epithelium, vertebrate neurons in the adult brain are amitotic (do not divide), though new neurons are generated by glia in restricted brain regions. Exactly why this is true is not known but it is generally agreed that neurons cannot divide because they have switched off much of the machinery that allows cells to divide.

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Environmental Science | Microbiology
Q: How do temperate rainforests differ from tropical rainforests?

A: Both rainforest types grow in very wet climates and are of high value for conservation. However, tropical rainforests grow only in hot climates and are very diverse with complex canopies, whereas temperate rainforests are much less diverse, have dense undergrowth, and occur mostly in cool coastal climates at high latitudes.

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