Tread Softly For You Tread On My Life: Biography and Compassionate Truth

Liberty or death; don't tread on me.

Many jurisdictions require cyclists to wear bicycle helmets. The UK is currently not one of these. However, an increasing number of interest groups, including the British Medical Association, want to change the status quo. They argue that mandatory cycle helmet laws will reduce the incidence of head injuries and that this will be both good for cyclists (because they will suffer fewer head injur...

Where Researchers Fear to Tread:

Cell migration: Don’t tread on me

During directed cell migration, telling cells to avoid certain areas may be as important as attracting them to others. The recently identified wunen gene is involved in the repulsive guidance of migrating primordial germ cells in Drosophila.

Rubber friction for tire tread compound on road surfaces.

We have measured the surface topography and calculated the surface roughness power spectrum for an asphalt road surface. For the same surface we have measured the friction for a tire tread compound for velocities 10(-6) m s(-1) < v < 10(-3) m s(-1) at three different temperatures (at -8 °C, 20 °C and 48 °C). The friction data was shifted using the bulk viscoelasticity shift factor a(T) to form ...

Tread lightly: insect tibias buckle under pressure.

Breaststroke, butterfly, front crawl and back crawl: many of us learnt these swimming styles as kids while splashing around in our local pool. These strokes all involve the swimmer lying on their back or front, much like the way most fish swim. Of course, some people prefer to swim tilted to one side rather than face down even though the side-stroke evokes images of elderly swimmers in bathing ...