Sustainability, population and reproductive ethics.

Introduction: The paper explores the links between sustainability, population and reproductive ethics, because sustainability goals and population matters both imply ethical commitments.

Materials And Methods: This article is based on a critical analysis of current scientific and philosophical literature on sustainability, population and reproductive ethics.

Results: The idea of sustainability, as enshrined in the United Nations Sustainable Development Goals, is a concept whose goal is to protect the environment, strengthen human communities and foster prosperity; in other words, to create a world in which all can thrive and prosper.

Contribution of photocatalytic and Fenton-based processes in nanotwin structured anodic TiO nanotube layers modified by Ce and V.

In the present work, nanotwin structured TiO nanotube (TNT) layers are prepared by the electrochemical anodization technique to form the anatase phase and by surface modification spin-coating of Ce and V precursors to form Ce-TNT and V-TNT, respectively. The surface and cross-sectional images by SEM revealed that the nanotubes have an average diameter of ∼130 nm and a length of ∼14 μm. In addition, the TEM images revealed the nanotwin structures of the nanotubes, especially the anatase (001) and (112) twin surfaces, that increase the transport of photogenerated charges.

Doctors and overpopulation 48 years later: a second notice.

Overpopulation exacerbates environmental and health problems, from climate change to biodiversity loss and pandemics. It is the 'upstream' driver of numerous existential threats. Addressing this compassionately - always - should be axiomatic for doctors.