The site has started to automatically default to https but it's
not fully compatible.
Code:
object-page menu-item-1482"><a href="http://wrongplanet.net/videos/">Videos</a></li><li class="menu-item menu-item-type-taxonomy menu-item-object-category menu-item-1666"><a href="http://wrongplanet.net/category/friends-relationships/">Friends & Relationships</a></li><li class="menu-item menu-item-type-taxonomy menu-item-object-category menu-item-1667"><a href="http://wrongplanet.net/category/community-newsmakers/">Community Newsmakers</a></li><li class="menu-item menu-item-type-taxonomy menu-item-object-category menu-item-1668"><a href="http://wrongplanet.net/category/school-jobs/">School & Jobs</a></li><li class="menu-item menu-item-type-taxonomy menu-item-object-category menu-item-1669"><a href="http://wrongplanet.net/category/parenting/">Parenting</a></li><li class="menu-item menu-item-type-taxonomy menu-item-object-category menu-item-1671"><a href="http://wrongplanet.net/category/autism-news/">Autism News</a></li><li class="menu-item menu-item-type-taxonomy menu-item-object-category menu-item-2113"><a href="http://wrongplanet.net/category/therapies/">Therapies & Services</a></li></ul>
</div>
The browsers are seeing these http links (mixed content)
in the code and are disabling all possible unsafe content on the page.
To get youtube videos to work in Chrome you need to click on the shield
to the right in the address bar and select Load unsafe scripts.
In Firefox, click on the lock icon to the left of the address bar, then show connection details,
then disable protection for now.
More information about mixed content from Mozilla