A new version of Rdio’s iPhone app is available, and if you’re a fan of the music streaming service, you should download it immediately. If you haven’t yet turned the corner on subscription-based streaming, this update makes it worth a look.

Some of Rdio’s best tools for discovering new music were previously only available on the website, but the new app now includes these tools, vastly improving the mobile experience. It’s also more stable and easier to use.

For those of you new to Rdio (“ar-dee-o”), here’s the deal: It’s an on-demand, cloud-based jukebox. You search for an artist, an album nam...

• 
• 
• 
• 
• 
• 

A trove of seaweed-like fossils unearthed in southern China may be some of the oldest plants ever discovered.

Until now the earliest definitive evidence of complex creatures resembling modern organisms was about 580 million years old. A...