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If one duckweed lands where a bird relieves itself, it’s capable of eventually creating a dense mat of duckweeds where there were none before. View the full article

If one duckweed lands where a bird relieves itself, it’s capable of eventually creating a dense mat of duckweeds where there were none before. View the full article

Climate change is altering America’s first national park so quickly that plants and animals may not be able to adapt. View the full article

Motherless twins. A magical manatee. A group of acclaimed writers — all from or living in Florida — create an exquisite corpse through America’s weirdest state. View the full article

Islands of greenery, called refugia, survive even the worst fires, sheltering species and renewing charred landscapes. View the full article

Nootka lupine, introduced in the 1970s to control soil erosion, has spread wildly, threatening native species. But many adore its purplish blue flowers. View the full article

From the flower arrangement to the plate, this is the era of the formerly unwanted plant. View the full article

A reader offers advice for keeping companion animals safe. View the full article

“What we’re doing is nothing unnatural,” said the author of a study to produce quolls that don’t like the taste of deadly toads. “It’s just matchmaking.” View the full article

The invasive plant is widespread in New York and was recently spotted for the first time in Virginia, but conservationists believe they can fight it. View the full article

Some invasive ladybugs feast on other species of ladybugs, but not as much when a kind of toxic aphid is around. View the full article

The invasive insects turned up in Pennsylvania in 2014. Now the state has placed 3,000 square miles under quarantine, and scientists worry the pest will spread. View the full article

The invasive insects turned up in Pennsylvania in 2014. Now the state has placed 3,000 square miles under quarantine, and scientists worry the pest will spread. View the full article

The largest bat in Europe, a vulnerable species, found shelter in a city park’s trees. Then they started to turn up dead. View the full article

The largest bat in Europe, a vulnerable species, found shelter in a city park’s trees. Then they started to turn up dead. View the full article