Durable architecture is a hallmark of Polynesian chiefdoms, associated with centralised control of residential and agricultural land. Previous work in West Polynesia has indicated a relatively late date for the onset of such construction activity—after AD 1000—suggesting that political development was influenced by events such as post-colonisation migration. The authors report new dating evidence from the excavation of a large earth mound on the island of Tongatapu. Its construction 1500 years ago indicates that, in contrast to previous findings, well-developed chiefdoms and field monuments probably dominated the landscapes of West Polynesia substantially prior to the colonisation of more easterly island nations.

During the mid-first millennium AD, new kingdoms and states emerged across South Asia. At this time, land grants made to Hindu temples are thought to have led to wide-ranging societal transformations. To date, however, neither the land-grant charters nor the changes they are said to have driven have been studied archaeologically. Here, the authors present the results of the first archaeological investigation of the charters and their landscape context. Bringing together the textual record with a survey of 268 religious and residential sites, the results establish historical baselines against which the longue durée developments of South Asian social, political and economic formation can be profitably re-posed.

Archaeological evidence for stilt-house settlements, or pile dwellings, has been recorded in diverse wet environments around the world. The first-millennium AD stilt-house villages in the Brazilian state of Maranhão, however, are poorly known. Difficulties in conducting archaeological investigations in seasonally flooded areas have restricted our ability to understand the societies that lived in these unique settlements. The results of recent fieldwork using non-invasive techniques to map, date and characterise these sites point towards a number of similarities and differences in their spatial organisation, material culture and social structure.

Two interstadial tree ring-width chronologies from Geikie Inlet, Glacier Bay Southeast, Alaska were built from 40 logs. One of these chronologies has been calendar dated to AD 224–999 (775 yr) crossdating with a living ring-width chronology from Prince William Sound, Alaska. Trees in this chronology were likely killed through inundation by sediments and meltwater from the advancing Geikie Glacier and its tributaries ca. AD 850. The earlier tree-ring chronology spans 545 yr and is a floating ring-width series tied to radiocarbon ages of about 3000 cal yr BP. This tree-ring work indicates two intervals of glacial expansion by the Geikie Glacier system toward the main trunk glacier in Glacier Bay between 3400 and 3000 cal yr BP and again about AD 850. The timing of both expansions is consistent with patterns of ice advance at tidewater glaciers in other parts of Alaska and British Columbia about the same time, and with a relative sea-level history from just outside Glacier Bay in Icy Strait. This emerging tree-ring dated history builds on previous radiocarbon-based glacial histories and is the first study to use tree-ring dating to assign calendar dates to glacial activity for Glacier Bay.

We generate a multi-proxy sub-centennial-scale reconstruction of environmental change during the past two millennia from Itilliq Lake, Baffin Island, Arctic Canada. Our reconstruction arises from a finely subsectioned 210Pb- and 14C-dated surface sediment core and includes measures of organic matter (e.g., chlorophyll a; carbon–nitrogen ratio) and insect (Diptera: Chironomidae) assemblages. Within the past millennium, the least productive, and by inference coldest, conditions occurred ca. AD 1700–1850, late in the Little Ice Age. The 2000-yr sediment record also reveals an episode of reduced organic matter deposition during the 6th–7th century AD; combined with the few other records comparable in resolution that span this time interval from Baffin Island, we suggest that this cold episode was experienced regionally. A comparable cold climatic episode occurred in Alaska and western Canada at this time, suggesting that the first millennium AD cold climate anomaly may have occurred throughout the Arctic. Dramatic increases in aquatic biological productivity at multiple trophic levels are indicated by increased chlorophyll a concentrations since AD 1800 and chironomid concentrations since AD 1900, both of which have risen to levels unprecedented over the past 2000 yr.

Tree-ring crossdates from glacially killed logs show that Tebenkof Glacier advanced into a forefield forest in the AD 710s and 720s. Recession from this First Millennium AD (FMA) advance occurred before the 950s, after which the ice margin readvanced in the 1280s to 1320s at the start of the Little Ice Age (LIA). A more extensive LIA advance was underway from the 1640s to 1670s, and the terminus stayed at or near its LIA maximum until the 1890s. These are the first absolute tree-ring crossdates for a FMA glacier advance in North America and support growing evidence from northwestern North America and Europe for a significant cool interval in the centuries around AD 500.

The pictograph discovered at Black Dragon Canyon, Utah, in the late 1920s, is a classic example of the Barrier Canyon style, dating probably to AD 1–1100. Creationists, however, have argued, from the incomplete preservation of the motifs, that it depicts a winged monster or pterosaur. A new study using portable X-ray fluorescence refutes this ill-founded interpretation and reveals a scene characteristic of Barrier Canyon style, featuring an anthropomorphic figure. By removing interpretational bias, the new technology finally lays to rest the Black Dragon Canyon pterosaur.

For many years, archaeologists and archaeometallurgists have suggested that recycled copper might have constituted a significant component of the metal in circulation in Britain during the first millennium AD. They have generally failed, however, to suggest a way of observing and quantifying this phenomenon. Here the authors propose a new methodology to rectify this. A large new database of chemical analyses of British copper alloys dating from the late Iron Age to the early medieval period demonstrates the potential of their approach; it shows that significant and measureable changes occur in metal circulation at the beginning of the first century AD and in the early Saxon period.

Terraced field systems are a feature of many regions of the world and have been dated as early as 6000 cal BC in the Levant (Kuijt et al. in Antiquity 81 (2007: 106–18)). The discovery of agricultural terraces in the northern Caucasus, reported here, extends their distribution into a new area. Relatively low population levels in the late medieval and early modern periods have preserved several blocks of terraced fields, some of them created at the beginning of the first millennium BC, others in the mid first millennium AD. The earlier terraced fields, associated with material and settlements of the Koban culture, culminated in over-exploitation of the land and exacerbated erosion during environmental change in the mid first millennium BC. The later series of terraced fields are of different form and are associated with the settlement in the area of communities of Alans in the first millennium AD. They largely avoided the areas rendered infertile by Koban period overexploitation. The morphology and chronology of the terraced field systems are explored using a combination of aerial photography, GIS analysis and field investigations.

Tangas are small convex triangular pottery covers found in large numbers in the Amazon delta. Their suggestive shape has long been attributed to use as a cover or shield for the female Mound of Venus, for protection, modesty (‘cache-sexe’ is the French term) or embellishment. Here the author offers a typology and searches for correlations between the shapes, sizes and patterns of the tangas and the date, location, purpose and status of the women who wore them. He emphasises that in spite of this advance, better understanding requires new information from properly designed excavations; 85 per cent of known tangas have been acquired by looting, purchase or low-precision digging.

As the temperature rises each year, the assemblages of prehistoric hunters emerge from the ice. Archaeologists in Norway are now conducting regular surveys in the mountains to record the new finds. A recent example presented here consists of a whole tunic, made of warm wool and woven in diamond twill. The owner, who lived in the late Iron Age (third–fourth centuries AD), was wearing well-worn outdoor clothing, originally of high quality.

The megalithic burials of southern India—a wonderfully varied set of monuments—have long needed a chronology and a context. Broadly contemporary with the Roman and Sasanian empires, these dolmens, cairns and cists have continually raised contradictions with their material contents. The authors attack the problem using luminescence applied to pottery at the site of Siruthavoor in north-east Tamilnadu. Although sharing material culture, this first pilot project gave dates ranging from 300 BC to AD 600, so exposing the problem and perhaps, in OSL, its long-term solution.

The authors show that the principal correlates of feasting in Viking Age Iceland were beef and barley, while feasting itself is here the primary instrument of social action. Documentary references, ethnographic analogies, archaeological excavation and biological analyses are woven together to present an exemplary procedure for the recognition of feasting more widely.

The shapes drawn out by the famous Nazca lines in the Peruvian desert are at their most evident from the air—giving rise to some famously fantastic theories about their origin. The new understanding offered here is the result of a piece of straightforward brilliance on the part of our authors: get down on the ground, where the original users were, and see where your feet lead you. Using stratigraphic and taphonomic reasoning to decide which lines were contemporary, they discover an itinerary so complex they can justify calling it a labyrinth, and see it as serving ceremonial progressions.

The south-east coast of Africa in the later first millennium was busy with boats and the movement of goods from across the Indian Ocean to the interior. The landing places were crucial mediators in this process, in Africa as elsewhere. Investigations at the beach site of Chibuene show that a local community was supplying imported beads to such interior sites as Schroda, with the consequent emergence there of hierarchical power structures.

Travellers naturally prefer to use the most passable routes and establish staging points on the way. Cost surface analysis predicts the easiest routes and viewshed analysis the territory visible from a staging point or destination. Applying these GIS techniques to the Buenavista Valley Corridor, our authors write a history of travel and exchange that vividly reflects the rivalry of two polities and the rise and fall of their nodal settlements.

In this neat investigation of a harbour site, the authors show how much can be learnt by site survey — and by surface plotting and remote mapping in particular. Here the excavations are used to pilot the geophysics, rather than the other way round, and ground-penetrating radar is employed to show not just where features are, but their sequence and their current vulnerability. This exemplary project demonstrates how, in modern approaches to fieldwork, sites are to be studied rather than excavated, comprehended rather than stripped.

Competitive board games, played on the ground, on the floor or on wooden boards, provide entertainment, distraction and exercise for the mind — it is hard to believe that north-west Europe was ever without them. But the authors here make a strong case that the introduction of such games was among the fruits of Roman contact, along with literacy and wine. In Britain and Ireland games were soon renamed, but belonged like children's jokes to a broad underworld of fast-moving cultural transmission, largely unseen till now.

An important group of spindle whorls found at Tha Kae in Thailand carries traces suggesting the use of iron spindles, and includes an unusual type of whorl shaped like a door knob. The author explores the implied contacts reaching into south China, but is also able to add a probable link with India in the early first millennium AD, well in advance of the better known Dvaravati period (sixth–thirteenth centuries AD).

An excavated sequence from Burkina Faso shows that the Asian jungle fowl Gallus gallus, also known as the chicken, had made its way into West Africa by the mid first millennium AD. Using high precision recovery from a well-stratified site, the author shows how the increasing use of chickens could be chronicled and distinguished from indigenous fowl by both bones and eggshell. Their arrival was highly significant, bringing much more than an additional source of food: it put a sacrificial creature, essential for numerous social and economic transactions, in reach of everyone.