Sky History 2 TV Guide

A look at a theory that suggests aliens may have colonised an ice-free Antarctica, before a global event plunged it into the Ice Age

The UFO researchers who believe Nasa is hiding the truth about alien life, questioning whether the deathbed confessions of scientists reveal a history of otherworldly contact

Predicting what could happen to religious symbols and artefacts after the disappearance of man, including the Christ the Redeemer statue of Rio de Janeiro and St Peter's Basilica in Rome

Deadly toxins are unleashed, lacing the world's lakes and rivers with acid. Plus, without human intervention, Niagra Falls faces a surprising fate

A look at how Marine Corps dogs would put their training to use in the absence of their masters, and experts estimate how the passage of time will threaten humanity's relics

The story of nurse Beverley Allitt, who was thought to be a caring and astute worker, until it was revealed she killed four children and tried to murder 11 others

Experts investigate whether the US military has a secret space programme, as well as evidence suggesting alien races have been in conflict for millennia

Experts question whether the facts of Earth's alien past could be buried in areas that - thanks to warfare or instability - are presently off-limits to exploration

The presenter recovers declassified files that reveal Nasa's secret moon nuke plan, the USSR's covered-up space tragedy and US spy satellite projects that led to space stations - all part of a classified space race

German Second World War fighter, the Messerschmitt Bf 109. Along with the Focke-Wulf Fw 190, it serves as the backbone of the Luftwaffe's fighter force and had a key role in the Battle of Britain

In 1996, two girls and their mother enjoying a walk in the Kent countryside were the victims of a frenzied hammer attack by Michael Stone, who left them for dead. Lin Russell and her six-year-old daughter Megan died from their injuries, but nine-year-old Josie survived and made a remarkable recovery. This film examines the events surrounding the murders and features interviews with Shaun Russell - Lin's widower and the girls' father - Josie's close friend Lucy Gregson, her former primary school teacher Lynda Roberts and police family liaison officer Pauline Smith

Experts investigate whether the US military has a secret space programme, as well as evidence suggesting alien races have been in conflict for millennia

Experts question whether the facts of Earth's alien past could be buried in areas that - thanks to warfare or instability - are presently off-limits to exploration

Giorgio Tsoukalos decodes some of the most compelling evidence for Ancient Astronaut theory found in mysterious carvings, symbols and structures that are strikingly similar on opposite ends of the Earth. Could the answers to mankind's greatest questions about its origins and future actually be hidden in plain sight, disguised in the form of alien messages?

An investigation into the Ark of the Covenant, one of the most sought after religious relics of all time and far more than just a box that contained the 10 Commandments. It apparently possessed divine powers that enabled it to produce food, take down stone walls, kill those who come in contact with it, and provide direct communication to God. If true, it may have had a link to an extraterrestrial past

Giorgio Tsoukalos takes an in-depth look at more extra-terrestrial mysteries, joining forces with theorists to consider whether unexplained advances in human evolution can be attributed to alien architects

For thousands of years, Scotland has been an epicentre of otherworldly phenomena. It is home to mysterious ancient stone circles, stories of strange beings and is a major hotspot for UFO sightings. Given these facts, it has been considered a potential magnet for extraterrestrial visitors

Along the Earth's north 37th parallel, there have been so many reports of unidentified flying objects, animal mutilations and other mysterious events that it has been dubbed the UFO Superhighway