After an accident, people often report that it felt a lot longer than it actually could have been in real time. Time seemed to slow down during the event. We tried to conduct a safe experiment in our laboratory to simulate a dangerous situation. We had participants look at a screen on which circles either moved on a collision course toward the participant or moved away from the participant. At ...

Combinatorial optimization algorithms that compute exact ground states for disordered magnets are seen to exhibit critical slowing down at zero temperature phase transitions. Using the physical features of the models, such as vanishing stiffness on one side of the transition and the ground state degeneracy, the number of operations needed in the push-relabel algorithm for the random field Ising...

A year after the Truth and Reconciliation Commission’s call to action, public health experts say indigenous health won’t improve without major system change. Last June, the commission issued a comprehensive treatment plan for healing the trauma inflicted on indigenous communities under Canada’s residential schools system — but not much has happened. Eight of the commission’s 94 recommendations ...

The speed of the bacterial flagellar motor is thought to be regulated by structural changes in the motor. Two new studies, Boehm et al. (2010) in this issue and Paul et al. (2010) in Molecular Cell, now show that cyclic di-GMP also regulates flagellar motor speed through interactions between the cyclic di-GMP binding protein YcgR and the motor proteins.

Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, ON, Canada L8S 4K1; Martinos Center for Biomedical Imaging, Harvard Medical School/Massachusetts General Hospital, Boston, MA 02129; McMaster Institute for Music and the Mind, Hamilton, ON, Canada L8S 4K1; Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON, Canada L8S 4K1; and ...

objective: in this study, the possibility of prenatal diagnosis of down syndrome with real-time pcr method was evaluated. in this context, optimization of a suitable method for purification of high quality dna from amniotic fluid samples was also considered. materials and methods: pregnant women who had the high risk of having babies with down syndrome were selected according to the biochemica...