The planet Earth is teaming with life. Why? How? This web site casts a little light on questions like these.

Enter

The Terra Vivida site represents a revolutionary way to fund the creation of educational resources. Revenue is raised by charging course managers a small fee for the right to publish annotated versions of the pages. Access to the un-annotated course materials is totally free for worldwide access. Fees received will be used to improve the performance of the site and to fund the creation of more resources. Fees are very very low - a year of access for a medium sized class of students to your annotated and customised version of the resources could cost you as little as £0.15 per student.