Genetic Engineering & Biotechnology News (April 11) -- Researchers at Illinois' Center for the Physics of Living Cells, Johns Hopkins University and Ulsan National Institute of Science and Technology in South Korea found that DNA molecules interact directly with one another in ways that are dependent on the sequence of the DNA and epigenetic factors, such as methylation. Also: Phys.Org (April 12), Science 360 (NSF, April 13).