Getting Rid of Graffiti with a Two-Wavelength Laser
Graffiti on the Berlin Wall may have become a symbol of freedom, but many heritage structures around the world are in grave danger of being…
Category: Big Questions
Washing lettuce might not remove all the germs
One of the first steps of any recipe is to wash your produce. In today’s global food system, fruits and vegetables make a lot of stops…
Satellite Technology Can Help Keep an Eye on Global Fishing
If you live in a developed country and eat seafood, there’s a very good chance that the fish on your plate was caught by a commercial…
Does stopping and then re-starting HIV treatment harm the patient?
Caroline, our resident HIV expert, updates us on some new knowledge about what happens when HIV positive patients stop and restart their…
Food or Foul? Aquaculture Pests May Actually be a Valuable Resource.
Many marine organisms have a planktonic form. This means that they drift in the ocean for part of their life until they can find something…
Why Could Tyrannosaurus rex Bite So Hard?
Be grateful you didn't live at the same time as a T-rex, because it's superior biting strength could really mess you up. Scientists at…
For a Cooler Climate, Just Add Ice
Should we geoengineer larger ice caps to reflect radiation away from the Earth to cool the climate? Is this a good idea? This article…
Using The Big Bang As A Ruler
Baryon acoustic oscillations, an artifact remaining from the Big Bang, can be used by scientists to measure cosmological distances…
Farmed Fish Need More Exercise to Out-Swim Wild Fish
Many people believe that farmed fish wouldn’t do very well in the wild, but do direct experiments comparing farm-raised to wild fish…
Science Makes it Harder for Criminals to Cover Their Tracks
We’re all familiar with “heat signatures” and “infrared images” thanks to the numerous cop shows on television. You’d be…