On the podcast today: sequencing the genome of the tuatara will reveal mysteries; we cross to Beruit in Lebanon, now in a state of emergency after yesterday's massive explosion killed at least 113 people and injured thousands; are Kiwis exploring their own backyard bothering to visit Auckland? MPs are being invited to attend a mobile dental clinic outside parliament to see inequality in dental care for themselves and Palmerston North's mayor talks about its sister city Hiroshima on the 75th anniversary of the atomic bombing.