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It used to be considered against the law in America to starve a member of an endangered species to death or harm it by destroying its home.
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It → log → home
That’s changing as the federal government chips away at the U.S. Endangered Species Act.
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government → change → Act
Under the Trump administration’s new interpretations of the law, as long as the animal isn’t directly targeted, there is no violation.
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animal → target → law
The new interpretations, if they hold up to court challenges, could leave a vast number of endangered species at higher risk.
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they → hold → risk
Many of the country’s shipping, logging, mining and development practices are influenced by the Endangered Species Act’s protections.
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Many → influence → protections
In some cases, entire species could face extinction.
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species → face → extinction
As an environmental conservation scientist, I have been following these and other changes affecting endangered species.
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I → follow → species
To understand what they mean, let’s take a look at the potential impact on three very different endangered species: the Florida panther, the North Atlantic right whale and the monarch butterfly.
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’s → understand → species
What’s changing in how the law is carried out
First, here’s what’s changing.
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what → change → ?
On Sept. 14, 2026, a Trump administration rule change went into effect that redefines harm under the Endangered Species Act to mean only directly killing a member of an endangered species.
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that → go → species
The new definition removes an interpretation that had been used for half a century, and upheld by the Supreme Court, that harming an endangered species includes eliminating that species’ habitat.
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harming → remove → habitat
That move alone could gut the law’s ability to protect many species that face their biggest threat from losing habitat they rely on.
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they → gut → habitat
The director of the U.S. Fish and Wildlife Service wrote a memo to the service’s leadership team dated Sept. 14, 2026, further reinterpreting the law by arguing that it applies only to intentionally killing an endangered species.
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it → write → species
So, if you didn’t target that animal, that would be OK.
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that → target → animal
If your ship strikes a whale, or you kill endangered animals while building a new data center, that would no longer be a problem under this interpretation of the law unless you meant to kill the animal.
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you → strike → animal
The administration also recently finalized its removal of what’s known as the Blanket 4(d) Rule.
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what → finalize → Rule
That rule provided automatic protections for species listed as “threatened,” one step before they become “endangered,” and for their critical habitat.
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they → provide → habitat
As a result of these changes, species are still listed on paper as endangered but are largely unprotected.
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species → list → paper
The Florida panther (Puma concolor coryi) is a majestic big cat that stalks the state’s southwestern pine forest and swamplands, including the Everglades.
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that → stalk → Everglades
Its population crashed in the 1900s from overhunting, in part to protect livestock, and from habitat loss.
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population → crash → loss
The Florida panther was close to extinction when the Endangered Species Preservation Act of 1966, the predecessor of the Endangered Species Act, was passed and led to changes that began to help stabilize the population.
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that → pass → population
The state’s wildlife agencies believe the number of adult panthers today to be between 120 and 230.
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number → believe → panthers
These top predators require large home ranges to live and hunt in, about 200 square miles (518 square kilometers) for males and 75 square miles (194 square kilometers) for females, so space is a scarce resource.
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space → require → females
And that’s where the challenge lies.
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challenge → ’ → ?
The public conservation areas are not capable of fully supporting the panther population.
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areas → support → population
Roughly one-third of the panther’s main habitat is on private ranches and timberlands that are frequently targeted for suburban development in southwestern Florida.
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that → target → Florida
Under the new Endangered Species Act interpretations, it would not be considered a federal offense to clear private palmetto flatwoods or cypress domes.
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it → consider → flatwoods
Yet ecology research indicates that fragmenting habitat by breaking it up with roads and development results in panther deaths.
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fragmenting → indicate → deaths
The majority of panther deaths that aren’t natural are due to collisions with vehicles as they attempt to cross busy roads.
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they → attempt → roads
The revised rule also allows landowners to clear areas that had been preserved as wildlife corridors on their land without being liable for harming the panthers.
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that → allow → panthers
That could accelerate habitat loss in southwest Florida’s Caloosahatchee River basin and undermine many years of effort put into the Florida Wildlife Corridor, a connected network of public and private lands that allow the Florida panther and other species to roam.
North Atlantic right whale: Noisy, dangerous seas
In the ocean, habitat is influenced not only by the water but also by sounds that travel through it.
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that → accelerate → it
That’s particularly true for whale habitat.
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That → ’ → habitat
The North Atlantic right whale (Eubalaena glacialis) is one of the most endangered whale species, with an estimated population of about 380 animals and only around 70 breeding females remaining, primarily along the North American Atlantic coast.
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whale → estimate → coast
Right whales communicate with low-frequency sounds that help them navigate, locate food and connect with their calves.
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them → communicate → calves
The noise caused by ships, seismic surveys used in oil exploration, and pile-driving associated with offshore energy projects results in background noise that can disrupt these signals.
In addition to sound interference, whales face physical risks from being struck by boats and becoming entangled in fishing gear.
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whales → cause → gear
The new interpretations of the Endangered Species Act remove some of the legal basis for enforcing rules for noisy seismic surveys, speed limits on vessels and restrictions on shipping routes designed to help protect the whales from harm.
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interpretations → remove → harm
Monarch butterfly: Living in a regulatory limbo
The eastern migratory monarch butterfly (Danaus plexippus), a delicate orange-and-black butterfly that was once plentiful across North America’s prairies in summer, is an example of a species that would benefit from the Blanket 4(d) Rule.
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that → live → Rule
The butterfly’s population has fallen by about 80% over the past decade, largely due to habitat loss.
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population → fall → loss
In the U.S., that includes the loss of milkweed, which the butterflies rely on for food and laying eggs as they travel through the Midwest, but that can compete with crops.
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that → include → crops
In the past, whenever a species was listed as threatened – a step below endangered, and the status being recommended for the monarch butterfly – it automatically received protections under the Blanket 4(d) Rule.
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it → list → Rule
…and 4 more, not listed.
The Aporia
