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Hunters view antlers of deer bucks during a trophy inspection in Hungary. Photo: Zsolt Czegledi / AP

Species of elephants, lions and other animals targeted by trophy hunters and poachers looking for the biggest, most impressive horns and antlers, have less of an ability to adapt to climate change, according to a new study by researchers at Queen Mary University.

The reason: Impressive antlers, manes and other characteristics can indicate how well an animal is doing overall, which can also mean they are better genetically equipped for their environment. "They also father a high proportion of the offspring. But if they're killed before they can spread their 'good genes' around, this reduces the overall fitness and resilience of that population," the study's lead author Robert Knell told National Geographic.

Yes, but: Knell said properly managed trophy hunting can be an asset to conservation, which is why the group is not calling for a ban. One suggestion may be to restrict the age at which a trophy animal can be hunted in order to give them time to pass on their genes to the next generation and the population more broadly.

In other studies: David Coltman, a biological science professor at University of Alberta, said that the results from Knell's study using a computer simulation model matched those of his own on big horn sheep in the Rocky Mountains, where they've seen a 20% decline in the size of the sheep's horns due to decades of trophy hunting.

Big picture: The Fish and Wildlife Service recently lifted a ban on importing hunted elephant trophies from Zimbabwe and Zambia when it can be proved it aided in conservation efforts. The announcement sparked outrage, which led to Trump tweeting and Interior Secretary Ryan Zinke releasing a statement saying permits would be put on hold while the decision about the ban was reviewed.

Go deeper

New Zealand aims to create smoke-free generation with tobacco ban

New Zealand Prime Minister Jacinda Ardern at a December news conference in Auckland, New Zealand. Photo: Phil Walter/Getty Images

New Zealand officials announced Thursday legislative plans to outlaw smoking by making it illegal to sell or supply tobacco products to the next generation as part of a lifetime ban.

Why it matters: "People aged 14 when the law comes into effect will never be able to legally purchase tobacco," Associate Health Minister Ayesha Verrall said in a statement announcing the proposed law, part of the Smokefree 2025 Action Plan.

FDA approves AstraZeneca COVID drug for people with immune problems

Photo: Qilai Shen/Bloomberg via Getty Images

The Food and Drug Administration issued an emergency use authorization for an AstraZeneca COVID-19 antibody drug for people with compromised immune systems.

Why it matters: The drug, Evusheld, is the first antibody therapy authorized in the U.S. to prevent coronavirus symptoms before virus exposure.

Scoop: U.S. begins denying Afghan immigrants

Afghan refugees on a bus bound for temporary housing after arriving in Greece. Photo: Byron Smith/Getty Images

The Biden administration has begun issuing denials to Afghans seeking to emigrate to the United States through the humanitarian parole process, after a system that typically processes 2,000 applications annually has been flooded with more than 30,000.

Why it matters: Afghans face steeper odds and longer processes for escaping to the U.S., despite the earlier sweeping efforts by the Biden administration to assist its allies. Immigration lawyers and advocacy groups say the government has set untenable barriers to a safe haven in the U.S.