CNN's John Berman and Harry Enten taste the new dye-free chips to see if they can tell the difference. | CNN

The 2020 race is dominated by 70-somethings as the top three Democrats in recent primary polls are all septuagenarians. Both former Vice President Joe Biden, 76, and Sen. Bernie Sanders, 78, would be the oldest elected president. Sen. Elizabeth Warren is 70. No other Democratic candidate younger than 70 is in double digits, according to a new CNN poll. President Trump is 73 years old, and he became the oldest first-term US president when he was inaugurated at age 70. https://cnn.it/34EhIj6 | CNN

China is positioning itself as a leader in the global green transition, sending a large delegation to COP30 and pledging to reduce emissions by up to 10% from their peak by 2035, even as it continues to build coal plants. CNN's Simone McCarthy reports from Beijing. | CNN