RESEARCH TRIANGLE PARK, N.C. – In the latest Bulldog roundup of life science and technology news: New wearable digital devices could signal a radical shift in medical practice; WSJ takes a look at how growth by wireless operators also comes with costs; Facebook explores the “Buy” button; and Craig Settles of Gigabit Nation offers insight into the muni broadband debate.

Technology: Wear your medicine

SILICON VALLEY, Calif. – Walter de Brouwer’s life changed when his son fell 35 feet from a window. Spending anxious months in intensive care, the entrepreneur became all too familiar with the machines that tracked his son’s vital signs. But for 23 hours a day he had to wait for a doctor to arrive to explain what it all meant.

Read full story in Financial Times.

Wireless operators’ growing pains

NEW YORK, N.Y. – Looking at second-quarter U.S. wireless subscriber estimates for the Big Four carriers, an investor might never know anything was amiss. Analysts expect strong overall net additions of postpaid subscribers for the big wireless carriers, which report results over the next two weeks. In the past, that has led to higher earnings and better margins. But in an era of heightened competition, sparked by T-Mobile and reinforced by AT&T, growth comes at a higher cost.

Read full story in The Wall Street Journal.

Facebook says if you like it, buy it

MENLO PARK, Calif. – Facebook is looking for some new fans: It wants to help small business owners up their ecommerce game. The social media giant announced Thursday that it’s testing a new “Buy” button feature with “a few” small and medium-sized businesses across the country. The button is available on the mobile and desktop version of Facebook and lets customers purchase products directly from businesses. Businesses partnering with Facebook on this test can embed the button on their Page posts or in Facebook ads. Just how many are we talking about in the test?

Read full story on CNN Money

Opinion: Mr. Wheeler, tear down these walls

WASHINGTON, D.C. – The FCC has been gently pushing for the end of state laws that make it difficult to build out municipal broadband networks. It should push harder, according to an opinion piece by Craig Settles of Gigabit Nation, as reported by GigOM on Sunday.

Read full story.