Why is the eastern monarch butterfly disappearing?

Michigan State University ecologists led an international research partnership of professional and volunteer scientists to reveal new insights into what's driving the already-dwindling population of eastern monarch butterflies ...

Study confirms classic theory on the origins of biodiversity

(PhysOrg.com) -- A Cornell study on the diversity of milkweed plants has used new techniques to prove an old theory that explains how the arms race between attacking insects and defended plants led to great diversity of both.

Hunt on for monarch butterfly eggs in the gardens of Canada

When Canadian conservation enthusiasts head out to find monarch eggs, it's always with a magnifying glass and a notebook. They are volunteers taking part in a summer census of the iconic, endangered butterflies.

Milkweed defensive strategy drives away friends of enemies

Over millions of years under attack from insects, milkweed plants have developed considerable defenses. These include incredible toxicity – sufficient to kill a horse or sheep – which emanates from a milkweed's leaves ...

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