Syrian government aircraft bomb besieged rebel-held eastern districts of the city of Aleppo for the first time in three weeks, activists say. What's making the news in California?
The United States condemns Russia for launching an all-out air assault against rebels in Syria, warning that strikes against civilian targets are a violation of international law. Twitter rolls out a raft of new anti-harassment tools, designed to help its users fend off abuse from online trolls. We find out about the gigantic new steel shield being rolled into place over the failed Chernobyl reactor, 30 years after the accident. Plus what the smudges on your mobile's screen say about you.