UNITED NATIONS (AP) — U.N. Secretary-General Antonio Guterres warned global leaders Tuesday of the looming risk of the world splitting in two, with the United States and China creating rival internets, currency, trade, financial rules…

NASA’S Transiting Exoplanet Survey Satellite (TESS) has discovered its first Earth-size planet. The planet, named HD 21749c, is around 89% of Earth’s diameter, and is 53 light-years away. Its surface is likely rocky and hot,…