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Science brain teasers require understanding of the physical or biological world and the laws that govern it.

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  Title Popularityˆ Difficulty Submitted  
181 Two Ships *** ** 03/25/02 by 204_BLaZe_41
182 Two Black Holes *** ** 07/29/02 by im_para_noid
183 Teardrop Glass *** *** 05/28/02 by im_para_noid
184 Tricky Tricky *** ** 01/27/08 by metallicman
185 A Drink Gone Wrong *** ** 07/26/06 by TheSpartan1024
186 Ball Bearing Box *** ** 04/02/02 by 204_blaze_41
187 Jim and Joe *** * 05/20/11 by Oxiproxd9
188 Moon Dust Dilemma *** ** 04/17/02 by bobbrt
189 Chlorine and Sodium *** * 04/07/02 by bighippo4
190 Glass Sphere *** *** 09/21/02 by im_para_noid
191 Hair Raising Duffus *** ** 03/06/03 by OD-1
192 Teenage Party *** *** 02/27/08 by Nym_Pimplyee
193 Fossils *** ** 12/25/05 by metallicman
194 Tightrope Walkers *** ** 04/23/04 by Jake
195 Impossible? *** *** 07/28/06 by medster99

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