Prime Minister for a day: children's views on junk food marketing and what to do about it.

Aims: This study explored children's awareness of and engagement with food marketing, and their views on action to address it.

Methods: A purposeful sample of 33 children (11-13 years) from the Wellington region of New Zealand were interviewed.

Results: Children were knowledgeable about food marketing, although most were not aware of the extent to which they were exposed.

Kids'Cam: An Objective Methodology to Study the World in Which Children Live.

Introduction: This paper reports on a new methodology to objectively study the world in which children live. The primary research study (Kids'Cam Food Marketing) illustrates the method; numerous ancillary studies include exploration of children's exposure to alcohol, smoking, "blue" space and gambling, and their use of "green" space, transport, and sun protection.

Methods: One hundred sixty-eight randomly selected children (aged 11-13 years) recruited from 16 randomly selected schools in Wellington, New Zealand used wearable cameras and GPS units for 4 days, recording imagery every 7 seconds and longitude/latitude locations every 5 seconds.

Distinctive subdomains in the resorbing surface of osteoclasts.

We employed a novel technique to inspect the substrate-apposed surface of activated osteoclasts, the cells that resorb bone, in the scanning electron microscope. The surface revealed unexpected complexity. At the periphery of the cells were circles and crescents of individual or confluent nodules.

Bone is not essential for osteoclast activation.

Background: The mechanism whereby bone activates resorptive behavior in osteoclasts, the cells that resorb bone, is unknown. It is known that α(v)β(3) ligands are important, because blockade of α(v)β(3) receptor signaling inhibits bone resorption, but this might be through inhibition of adhesion or migration rather than resorption itself. Nor is it known whether α(v)β(3) ligands are sufficient for resorption the consensus is that bone mineral is essential for the recognition of bone as the substrate appropriate for resorption.