August 2018

Stick Spiders from Different Hawaiian Islands Evolve in Parallel

Esther Pilla reports on a discovery in evolution It is very rare for scientists to catch examples of parallel, convergent evolution, but earlier in March Professor Rosemary G. Gillespie and her colleagues from the University of California, Berkeley, published
a study that highlighted parallel evolution in Hawaiian stick spiders. The group analysed a genus of spider, Ariamnes, whose ancestor probably first arrived on the oldest Hawaiian islands and later spread to

Liquid-liquid Phase Transition Observed for the First Time

Esther Pilla reports on the state of water research On Earth, water can exist as solid, liquid and
 gas. These phase transitions are important because they occur within a range of temperatures compatible with human life (or, in the case of boiling water, temperatures that allow cooking). This March, a team from Arizona State University and the University of Amsterdam demonstrated for the first time that water can transition from