Sci-fi has long been obsessed with the idea of 'mind control'. While no supervillains will be controlling our every thought and action, some researchers have been able to control living cells through a genius combination of light beams and genetic engineering. This field is known as optogenetics, the use of light beams to control genetically modified cells.

Recently, there has been a lot of confusion about what a tariff is and how it will affect the economy. This article will aim to explain tariffs in simple terms.