内容摘要：But Ukraine’s allies remained deeply skeptical Monday about prospects for talks and whether Putin was serious about peace.

But Ukraine’s allies remained deeply skeptical Monday about prospects for talks and whether Putin was serious about peace.

Abigail Jablansky, head of project management, walks down the stairs on the NH3 Kraken, a tugboat powered by ammonia, Friday, Sept. 13, 2024, in Kingston, N.Y. (AP Photo/Alyssa Goodman)Amogy first used ammonia to power a drone in 2021, then a tractor in 2022, a semi-truck in 2023, and now the tugboat to prove the technology. Woo said their system is designed to be used on vessels as small as the tugboat and as large as container ships, and could also make electricity on shore to replace diesel generators for data centers, mining and construction, or other heavy industries.

The company has raised about $220 million. Amazon, an enterprise with immense needs for shipping, is among the investors. Nick Ellis, principal of Amazon’s $2 billion Climate Pledge Fund, said the company is excited and impressed by what Amogy is doing. By investing, Amazon can show ship owners and builders it wants its goods delivered with zero emissions, he added.“Many folks will now get a chance to see and understand how real and promising this technology is, and that it could actually be in container ships or tugboats in a matter of a few years,” he said. “If you would’ve asked five years ago, I think a lot of people would have thrown up their hands ... And suddenly we have not only a compelling example, but a commercially-viable example. These types of things don’t come by every day.”A worker walks on the NH3 Kraken, a tugboat powered by ammonia, Friday, Sept. 13, 2024, in Kingston, N.Y. (AP Photo/Alyssa Goodman)

A worker walks on the NH3 Kraken, a tugboat powered by ammonia, Friday, Sept. 13, 2024, in Kingston, N.Y. (AP Photo/Alyssa Goodman)Other companies are developing ammonia-powered ships that still use some diesel.

In Singapore in March,

how ammonia could be used in combination with diesel as a marine fuel.But those newcomers and summer tourists aren’t the ones relying on nature for food, and they aren’t the ones fighting for traditions that go back generations. As inland lakes warm with climate change, tribal members experience the effects first.

Carol Hanlon, left, and Renee DeBrot record the sex, size and type of fish at a station at a boat landing on Round Lake Saturday, April 13, 2024, near Hayward, Wis. (AP Photo/John Locher)Carol Hanlon, left, and Renee DeBrot record the sex, size and type of fish at a station at a boat landing on Round Lake Saturday, April 13, 2024, near Hayward, Wis. (AP Photo/John Locher)

Kelly Martin, left, embraces Muriel Shirriff, as he drops off frozen fish he and his family caught Friday, April 19, 2024, in Hayward, Wis. (AP Photo/John Locher)Kelly Martin, left, embraces Muriel Shirriff, as he drops off frozen fish he and his family caught Friday, April 19, 2024, in Hayward, Wis. (AP Photo/John Locher)