North & Central America

A household heat pump

California to install 6 million heat pumps by 2030

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In 2022, California Gov. Gavin Newsom set a goal for the world’s fifth-largest economy to deploy 6 million heat pump units by 2030. Last week, the California Heat Pump Partnership announced the nation’s first statewide blueprint to achieve the state’s ambitious goals for deploying heat pumps, a critical tech for decarbonizing buildings and improving public health. Looking beyond the 2030 target, the Golden State ultimately needs to deploy an estimated 23 million heat pumps to decarbonize its residential and commercial sectors by 2045.

Reef shark

Endangered Caribbean reef sharks rebound in Belize

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Endangered Caribbean reef sharks and other shark species are making a striking recovery in Belize after plummeting due to overfishing between 2009 and 2019, according to recent observations. Experts say the establishment of no-shark-fishing zones around Belize’s three atolls in 2021 is what enabled the population boom. These shark-safe havens were made possible by remarkable cooperation and synergy among shark fishers, marine scientists, and management authorities.

Minneapolis at night

Minneapolis to become first city in North America to own and operate biochar facility

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Biochar is a specialized charcoal created by heating wood waste to 700 degrees in a low-oxygen environment. The Minneapolis biochar facility will have the capacity to annually: process over 3,000 tons of wood waste, produce over 500 tons of biochar, and remove nearly 3,700 tons of carbon dioxide (the equivalent of taking over 789 cars off the road). Construction is expected to begin this spring with biochar production beginning in the summer or early fall.

A healthcare worker preparing an injectable medication for an article about HIV prevention injection

Annual jab for HIV protection passes trial hurdle

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An annual injection designed by California’s Gilead Sciences to guard against HIV has completed an important early safety trial, researchers report in The Lancet medical journal. Lenacapavir stops the virus from replicating inside cells. For the trial, 40 people without HIV were injected into the muscle with lenacapavir, with no major side effects or safety concerns. And after 56 weeks, the medicine was still detectable in their bodies. If future trials go well, it could become the longest-acting form of HIV prevention available.

Monarch butterfly

Eastern monarch butterfly population nearly doubles in 2025

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The population of eastern monarch butterflies – which migrate from Canada and the US to Mexico during the winter – has nearly doubled over the last year, according to a recent report commissioned in Mexico, generating optimism among nature preservationists. The growth in numbers for the orange-and-black butterflies follows years of ongoing conservation efforts – and perhaps provides a sliver of optimism after otherwise discouraging long-term trends for the species.

A close-up illustration of a human eye with a clear, healthy cornea, representing stem-cell cornea transplant research for an article about stem-cell cornea transplant

Stem cell therapy trial reverses “irreversible” damage to cornea

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A new study conducted by scientists at Massachusetts Eye and Ear investigated a new treatment that removes stem cells from a patient’s uninjured eye, growing their population in the lab for a few weeks, then surgically transplanting them into the injured eye. The phase 1/2 trial recruited 14 patients to undergo the procedure. By the first checkup at three months, the corneas of seven (50%) of the participants had been completely restored. By the 12-month mark, that number had increased to 11 (79%) patients.

California now has more EV charging ports than gas nozzles

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California has steadily amassed its EV charging network with both public and private charging ports over the last few years. In 2024, California boasted 178,500 total EV ports compared to around 120,000 estimated gas nozzles, according to the California Energy Commission. The number of accessible chargers across California has nearly doubled since 2022. Since August, the last time these figures were publicly updated, the state has recorded roughly 26,000 additional publicly accessible EV chargers.

High-speed train

Canada to build massive, fully electric, 185-mph inter-city rail network

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Canada is set to begin work on a high-speed inter-city rail network – the largest infrastructure project in the country’s history. Spanning 621 miles, the fully electric new rail network will serve 18 million people – nearly half of Canada’s population – across the Toronto-Quebec City corridor. It’s expected to serve 13 times more passengers annually than the current service. Canada is expected to invest nearly $3 billion USD over the next six years to bring the project to light.

Haida Gwaii cove

Haida celebrate title agreement that enshrines right to control their own destiny

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The Big Tide Haida Title Lands Agreement affirms that the Haida have Aboriginal title over all of the Haida Gwaii islands’ lands, beds of freshwater bodies, and foreshores to the low-tide mark. It will transition the Crown-title land owned by Canada to the Haida people, granting them an inherent legal right to the land. Gaagwiis Jason Alsop, president of the Council of the Haida Nation, said the agreement was the culmination of “well over 100 years of political mobilization by the Haida Nation.”

daniele buso Va n x Pgr unsplash

More than 100,000 pounds of trash removed from the Arctic since 2021

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Over 50,000 pounds of trash have been removed from the Arctic in 2023 alone after a multilateral effort flooded critical northern ecosystems with volunteers. Working during the brief Arctic summer, clean-up operations were carried out in Alaska, Greenland, Norway, and Iceland. Nearly 2,000 volunteers were enlisted across the treaty nations of the Arctic Council, an inter-governmental panel on peaceful and sustainable use and protection of the Arctic zone formed by the nations that pierce its frozen bordersand the Indigenous peoples that call it home.