This week, family and friends crossed international borders and military checkpoints and overcame the usual political bureaucracies to attend my daughter's two weddings. Why two weddings? Let me explain.
Living cells are replete with intricate monitoring and regulatory circuits because survival, reproduction and adaptation to changing circumstances must be highly robust. Understanding these circuits and how they operate is a priority for 21st century cell and molecular biology.
Pakistani children may be enjoying the break, but most of them know exactly why they can't go to school. I sit stiff as one boy looks up from his video game to tell me the school buses might not be safe right now.