Uncategorized

  1. Climate

    Vikings may have fled Greenland to escape rising seas

    Vikings abandoned Greenland in the 15th century. Lower temperatures, an expanding ice sheet and rising sea levels may have played a role in their departure.

    By Freda Kreier
  2. Animals

    50 years ago, scientists were genetically modifying mosquitoes

    In 1971, scientists turned to genetics to control disease-spreading mosquitoes without DDT. Today, there are a variety of pesticide-free methods.

    By Maria Temming
  3. Health & Medicine

    COVID-19 testing is complicated right now. Here are answers to 6 big questions

    There are two major categories of COVID-19 diagnostic tests. Here’s what you need to know when deciding whether to take an at-home test or head to the doctor.