1. Physics: How did Newton discover the value of the universal gravitational constant?, David Woodworth, 10-12 Wed Nov 4 20:58:38 1998
2. Medicine: Re: Do our cells communicate, or just keep each other warm?, David North, Associate Physicist, Medical Physics Mon Mar 22 09:37:55 2004
3. Computer Science: Re: What are the methods or techniques to detect viruses used by an anti-virus?, David B. Hull, Ph.D., Faculty, CIS/TCM, DeVry Institute of Technology Sat Dec 30 16:20:00 2000
4. Medicine: Re: Are there any dangers of using a black light as a night light?, David North, Associate Physicist, Medical Physics Wed May 25 10:53:36 2005
5. Evolution: do scientists believe all dinosaurs were cold-blooded?, david , 7-9 Wed Feb 28 08:44:46 2001
6. Physics: Re: How big is the gravitational force between nucleons?, David North, Staff, Medical Physics, Rhode Island Hospital Wed Jun 7 08:42:52 2000
7. Astronomy: Re: Gravitons and black holes, Suzanne Willis, professor,Northern Illinois University Thu Jan 15 12:17:25 1998
8. Earth Sciences: Re: Can energy be produced with no pollution by using less of it?, David Smith, Faculty Geology, Environmental Science Fri Nov 9 12:35:49 2001
9. Neuroscience: Re: why don't we feel the earth rotating physically?ie...dizziness,nausea etc., David Hackos, Post-doc/Fellow, Molecular Biophysics, National Institutes of Health Mon Oct 4 15:04:44 1999
10. Earth Sciences: Re: How many earth plates are there?, David Smith, Faculty Geology, Environmental Science Wed Feb 7 13:31:23 2001
11. Microbiology: Re: What is the largest bacterium know to science and where does it live?, David Beck, MadSci Admin Fri Jan 29 11:28:58 1999
12. Earth Sciences: Re: how does magnetic polarity on the ocean floor support plate techtonics?, David Scarboro, Faculty, Earth Sciences, The Open University Sun Jan 7 10:45:15 2001
13. Genetics: Re: What is the evolutionary background of Alagille Syndrome?, Steve Mack, Post-doc/Fellow, Molecular and Cell Biology, Children's Hospital Oakland Research Institute Thu Feb 8 03:39:06 2001
14. Earth Sciences: Re: Where will my home be in a million years?, David Smith, Director of Professional Development Tue Nov 4 14:52:08 2003
15. Other: Re: Why does Upside Down Map of the World looks so weird?, Aydin Orstan, Staff, Office of Food Additive Safety, Food and Drug Administration Thu Dec 6 11:49:44 2001
16. Botany: Re: How many new plants were discoverd on the seafloor?What are their names?, Warren Currie, Grad Student/Ph.D.,University of Guelph Wed Jul 22 12:38:18 1998
17. Evolution: Re: Do you think that the passenger pigeon could still be alive today?, Kurt Wollenberg, Post Doc Genetics, North Carolina State University Mon Dec 20 10:28:49 1999
18. Botany: Re: How is lead bound to vegetation on the street side?, David Hershey, Faculty, Botany, NA Sat Jul 23 17:45:50 2005
19. Physics: Re: I have a watch that contains 14 'Borosit glass capsules' that glows...., David North, Staff, Medical Physics, Rhode Island Hospital Fri May 25 15:31:39 2001
20. Botany: Re: Do different Coloured lights affect plant growth?, David Hershey, Faculty, Botany, NA Wed Mar 29 21:25:24 2000
21. Botany: Re: Do pine trees really 'know' when it is Easter?, David Hershey, Faculty, Botany, NA Mon Apr 10 20:11:11 2006
22. Engineering: Re: How does iron in reinforced glass help make the glass stronger?, David Ellis, Researcher, NASA Lewis Research Center Mon Jan 11 09:50:49 1999
23. Physics: Re: What shielding is needed to protect an astronaut from the Van Allen belts?, David North, Staff, Medical Physics, Rhode Island Hospital Fri Mar 30 09:44:54 2001
24. Botany: Re: what is the diffrence between inorganic and organic soil?, David Hershey, Faculty, Botany, NA Tue Feb 6 00:36:37 2001
25. Zoology: Re: i found a hard-shelled spider. black on bottom/whitespecks top hockeymask, , David Richman, Staff, Entomology Wed Oct 4 16:20:58 2000