An understanding of the age of the Acheulian and the transition to the Middle Stone Age in southern Africa has been hampered by a lack of reliable dates for key sequences in the region. A number of researchers have hypothesised that the Acheulian first occurred simultaneously in southern and eastern Africa at around 1.7-1.6 Ma. A chronological evaluation of the southern African sites suggests t...

The southern African species of the water beetle genus Hydraena Kugelann, 1794, are revised. Twenty-eight new species are described, and redescriptions and new collection records are given for three previously described species, based on the examination and databasing of 11,534 specimens from 488 localities/events. Male genitalia are illustrated, and high resolution habitus images of the holoty...

The history of southern Africa involved interactions between indigenous hunter-gatherers and a range of populations that moved into the region. Here we use genome-wide genetic data to show that there are at least two admixture events in the history of Khoisan populations (southern African hunter-gatherers and pastoralists who speak non-Bantu languages with click consonants). One involved popula...

Zimbabwe is the only country in southern Africa with no reported African swine fever (ASF) outbreaks during 1993-2014. However, the 2015 discovery of genotype II ASF virus in Zimbabwe indicates the reemergence of ASF in this country and suggests that this viral genotype may be spreading through eastern and southern Africa.

The COMPASS (COmprehensive Magnetic Processes under the African Southern Sub-continent) program forms part of a collaboration project between Germany and South Africa, called Inkaba ye Africa, and aims to investigate the regional geomagnetic field in this area, particularly its evolutionary behaviour. Results obtained from field surveys conducted by the Hermanus Magnetic Observatory (HMO) and ...

The dramatic decay of dipole geomagnetic field intensity during the last 160 years coincides with changes in Southern Hemisphere (SH) field morphology and has motivated speculation of an impending reversal. Understanding these changes, however, has been limited by the lack of longer-term SH observations. Here we report the first archaeomagnetic curve from southern Africa (ca. 1000-1600 AD). Dir...

The HIV/AIDS (human immunodeficiency virus/acquired immune deficiency syndrome) epidemiological model for southern Africa appears to fit data available for the Papua New Guinea (PNG) experience to date. Using certain aspects of the southern African experience, we can create some scenarios for the potential economic costs of HIV/AIDS in PNG. The first part of this paper surveys relevant literatu...

Illegal labour immigration is increasingly a source of concern to politicians and the public in relatively rich countries within the Southern African Development Corporation (SADC). This paper examines the status of illegal immigration in Botswana and South Africa. The definition of illegal immigration is discussed. It draws extensively from similar experiences in the United States of America a...

Disakisperma Steud. is a genus of four predominantly perennial C4 (NAD-ME) species in the Americas, Africa, and Asia. Its species previously were treated in Eleusine, Eragrostis, Coelachyrum, Cypholepis, Leptochloa, or Diplachne by nearly all authors.It includes the widespread North and South American amphitropical disjunct Disakisperma dubium (type of the genus), Disakisperma eleusine from sou...