Food allergies trigger multibillion-dollar specialty market. An estimated 12 million people in the US have food allergies, and another 2 million have celiac disease, a disorder in which the body's immune system attacks itself when exposed to gluten, a protein found in wheat, barley and rye. [News Source]

The war on mosquitoes. Swatters have been replaced by airplanes that swoop from the sky, dropping chemical clouds to obliterate the enemy. [News Source]

New Zealand seeks to curb livestock’s gas emissions. Herd-produced methane, considered a major culprit in global warming, poses a challenge as New Zealand tries to become the world's first carbon-neutral country. [News Source]