An enlarged heart can be treated and, for some people, it is possible to reduce the enlarged area over time. Many of the medicines used to treat high blood pressure will also reduce heart muscle size if it is enlarged. In particular, ACE inhibitors and angiotensin receptor blockers can be very effective.
Hardtack (or hard tack) is a simple type of cracker or biscuit, made from flour, water, and sometimes salt. Inexpensive and long-lasting, it was and is used for sustenance in the absence of perishable foods, commonly during long sea voyages and military campaigns.
Openstack is basically a bunch of tools to setup a large-scale virtualization environment... where you can quickly create & manage virtual machines through a GUI, and keep track of what is going on. It's another framework similar to Amazon's EC2 and S3 services. There are others similar to this, like Eucalyptus and CloudStack.