NPR's Mary Louise Kelly talks with Emily Kwong and Rachel Carlson of Short Wave about newly unearthed Pompeiian frescoes, how dark energy may be changing, and the largest known marine reptile.

NPR's Ari Shapiro talks with Regina Barber and Rachel Carlson of Short Wave about chickadees with awesome memories, grinning robots, and the bugs most commonly found in haiku.

NPR's Ailsa Chang talks with Regina Barber and Rachel Carlson of Short Wave about singing gibbons, how tai chi might lower blood pressure, and why women get quicker benefits from exercise than men.