New Delhi, May 9 -- Insects are all around us - an ant on the sidewalk, a bee buzzing by, a butterfly floating on the breeze - and they shape the world we experience. They pollinate flowering plants, decompose waste, control pests, and are critical links in food chains.

Despite how much humans rely on insects, our actions are reducing their populations in many parts of the world. A recent study found that the United States lost more than 20 per cent of its butterflies over the past two decades. Sadly, this rate of decline is not unusual. Many studies have found that insect populations are declining at 1 per cent to 2 per cent per year.

To understand why this is happening, Status of Insects, an international research group we are part o...