As agriculture has expanded over the last few decades, global dependence on pollinator insects has increased. But crop diversity hasn't increased nearly as much – and this disparity spells trouble for many regions, especially parts of South America and Asia, according to a new study.
Butterfly numbers have dropped by one third in the last two decades in the US, echoing declines seen in Europe. These figures raise alarm bells for the health of other insect populations, because butterflies face similar environmental changes and are used as a proxy for studying insects in general.
Bumblebees, recently listed under the Endangered Species Act, has declined by nearly 90 percent. But they're in trouble this time because of diseases spread by domestic honeybees, reports a recent study.
Recent court cases have focused on the possible effects of glyphosate, found in Monsanto’s Roundup, on humans. But researchers are now investigating whether this commonly used herbicide could also be having adverse effects on the health and behavior of honeybees.