This week, thousands of refugees from across the developing world tried to enter Poland by crossing its border with Belarus, its neighbor to the east. But the European Union says this is not only a case of desperate families fleeing their homes, but is a hybrid attack by Alexander Lukashenko, considered Europe's last dictator, against his enemies by using people as weapons. Nick Schifrin reports. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

At the COP26 climate change conference in Glasgow, Scotland, world leaders are trying to reach new agreements and commitments toward reducing emissions and slowing the impacts of a warming planet. William Brangham reports from Glasgow on the key issue of getting enough assistance to the world's most vulnerable nations. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

Bren Smith has spent his life on the water. After seeing firsthand the harsh effects of commercial fishing on the climate, he wanted to find a more environmentally friendly way to do what he loved. In 2013, he founded the non-profit GreenWave to teach regenerative ocean farming techniques to fishermen across the world. He gives his Brief But Spectacular take on making a living on a living planet. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

Negotiators from around the world are meeting in Glasgow for a second week for the United Nations summit aimed at getting new commitments and actions to reduce greenhouse gas emissions. Pressure from climate activists has been building on the streets this weekend, with demands for meaningful change beyond the rhetoric of these gatherings. William Brangham reports. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

A new kind of construction with a not-so-new material is taking off in the U.S. Mass timber can replace steel and concrete in large buildings and proponents say it's greener and faster to build with. NewsHour Weekend Special Correspondent Megan Thompson recently visited the Ascent building in Milwaukee, a 25 story mass timber tower that will open next summer.

PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

Most widely known as the curmudgeonly libertarian Ron Swanson on NBC's hit comedy 'Parks and Recreation,' Nick Offerman admits to several similarities with his character: a love of carpentry, whiskey, and the great outdoors. Now, Offerman is turning his attention to a new cause: environmental activism. His new book, 'Where The Deer and Antelope Play,' is a meditation on our relationship to the natural world. He joins Christopher Booker to discuss. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

President Biden's infrastructure bill includes $50 billion for climate 'resiliency': funding to help mitigate and adapt to the effects of global warming. Special correspondent Tom Casciato reports on a unique partnership in California that uses behavioral science and cultural awareness in climate studies to help communities cope with extreme weather, as part of our series, 'Peril and Promise: the Challenge of Climate Change.' PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

Young people around the world continue to protest in large numbers over what many see as inaction from political leaders on climate change--today's Global Day of Action is no exception. As the COP26 conference continues in Glasgow, Jasmine Sanders, Executive Director of 'Our Climate,' a non-profit that works to empower young people to lead and teach others about 'science-based, equitable climate policy solutions,' joins. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

The impacts of a warming world and changing climate are more evident every day. Many of the Earth's tropical glaciers are in jeopardy because of human activity's effect on the atmosphere. William Brangham reports on a couple in Columbus, Ohio, who have dedicated their scientific careers to preserving and studying these crucial, endangered parts of the planet's ecosystem. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

World leaders at the U.N. climate summit pledged today to cut methane emissions and conserve forests. President Joe Biden wound up his two days at the Glasgow gathering focusing on America's role in the new initiatives. William Brangham reports. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders