Longtime Cuban diplomat Ricardo Alarcón died on Sunday at the age of 84. He was a student leader during the Cuban revolution who eventually became Cuba’s foreign minister and president of the National Assembly, Cuba’s parliament. He played a key role in talks between the United States and Cuba for many years. Democracy Now! spoke to Alarcón in 2015 as the Cuban Embassy reopened in Washington for the first time in 54 years.

The Ukrainian government says about 100 people have been able to evacuate the besieged steel plant in Mariupol, where thousands of civilians and fighters have taken shelter in recent weeks as Russian forces took over most of the strategic port city. This comes after several previously arranged “humanitarian corridors” fell apart. Meanwhile, U.S.

We speak with one of the leaders of a new study that finds one in five reptiles are threatened by extinction. The results of the first comprehensive study of over 10,000 reptile species around the world were just published in the journal Nature and found multiple causes, including deforestation, urban encroachment, hunting and the climate crisis.

We speak with a leading Indian climate scientist about the punishing heat wave that produced the hottest weather ever recorded in April for India and Pakistan. Temperatures have climbed above 110 degrees Fahrenheit, causing power outages, school closures, crop damage and health warnings. Scientists link the early onset of the region’s intense summer to the climate crisis and say more than 1 billion people may be impacted by more frequent and longer heat waves.

The landmark 1979 labor documentary, “The Wobblies,” has been restored and rereleased for May Day, International Workers’ Day.

Climate change is forcing animal migrations at an unprecedented scale, bringing many previously disconnected species into close contact and dramatically raising the likelihood of viruses leaping into new hosts and sparking future pandemics. That’s according to a new study in the journal Nature, which predicts that climate-driven disruptions to Earth’s ecosystems will create thousands of cross-species viral transmissions in the coming decades.

Nuclear watchdogs are expressing alarm over safety conditions at the Zaporizhzhia nuclear power plant, which has been under Russian control since early March after a fight that led to a fire near one of the plant’s reactors. It is the largest nuclear power plant in Europe and located in the largest city in southeastern Ukraine still under Ukrainian control.

The Biden administration has pledged billions in military aid to Ukraine since Russia invaded in late February, and U.S. Defense Secretary Lloyd Austin said this week that the U.S. goal was “to see Russia weakened.” Author and analyst Anatol Lieven, senior fellow at the Quincy Institute for Responsible Statecraft, warns that unless there is a commitment to finding a diplomatic resolution to the conflict, it could become a U.S.