The problem previous researchers couldn't overcome was how to keep the herpes viruses at the tumor site long enough to work. (sciencedaily.com)
Despite previous researchers finding that girls were more likely to suffer cyberbullying and to be cyberbullies themselves, more male respondents reported both being bullied and bullying behaviour online. (cyberbullying.org)
These modern estimates are notably smaller than the 10,000 to 11,000 Gt C (2 × 1016 m3) proposed [24] by previous researchers as a reason to consider clathrates to be a geo - organic fuel resource (MacDonald 1990, Kvenvolden 1998). (en.wikipedia.org)