A boffin at the Bulgarian national Space Research Institute has stated that not only are aliens living among us, but that they object strongly to "immoral behaviour" by humanity - such as causing global warming. "Unnatural" acts such as use of cosmetics and "artificial insemination" are also frowned upon by the extraterrestrial visitors. Luchezar Filipov, deputy head of the space institute at the government's Bulgarian Academy of Science, made these startling assertions to Bulgarian media earlier this week. The Sofia Echo, referencing other local media, quotes the eminent space brainbox as stating that "they [aliens] are here right now, among...