Nova

What Are Dreams?

Possible purposes of dreams are explored via the work of neuroscientists and sleep researchers, who employ neurological and psychological experiments to learn what dreams are and why they occur.

Rating: TV-G

What Are Dreams?

Possible purposes of dreams are explored via the work of neuroscientists and sleep researchers, who employ neurological and psychological experiments to learn what dreams are and why they occur.

Rating: TV-G

What Are Dreams?

Possible purposes of dreams are explored via the work of neuroscientists and sleep researchers, who employ neurological and psychological experiments to learn what dreams are and why they occur.

Rating: TV-G

What Are Dreams?

Possible purposes of dreams are explored via the work of neuroscientists and sleep researchers, who employ neurological and psychological experiments to learn what dreams are and why they occur.

Rating: TV-G

What Are Dreams?

Possible purposes of dreams are explored via the work of neuroscientists and sleep researchers, who employ neurological and psychological experiments to learn what dreams are and why they occur.

Rating: TV-G

What Are Dreams?

Possible purposes of dreams are explored via the work of neuroscientists and sleep researchers, who employ neurological and psychological experiments to learn what dreams are and why they occur.

Rating: TV-G

What Are Dreams?

Possible purposes of dreams are explored via the work of neuroscientists and sleep researchers, who employ neurological and psychological experiments to learn what dreams are and why they occur.

Rating: TV-G

What Are Dreams?

Possible purposes of dreams are explored via the work of neuroscientists and sleep researchers, who employ neurological and psychological experiments to learn what dreams are and why they occur.

Rating: TV-G

What Are Dreams?

Possible purposes of dreams are explored via the work of neuroscientists and sleep researchers, who employ neurological and psychological experiments to learn what dreams are and why they occur.

Rating: TV-G

What Are Dreams?

Possible purposes of dreams are explored via the work of neuroscientists and sleep researchers, who employ neurological and psychological experiments to learn what dreams are and why they occur.

Rating: TV-G

What Are Dreams?

Possible purposes of dreams are explored via the work of neuroscientists and sleep researchers, who employ neurological and psychological experiments to learn what dreams are and why they occur.

Rating: TV-G

Saved by the Sun

The promise of solar energy is examined. Included: the world's largest solar-thermal plant, at Kramer Junction in the Mojave Desert; solar-powered homes; and comments from Sarah Kurtz, who helped design the solar cell that's powering the Mars rovers.

Rating: TV-G

Saved by the Sun

The promise of solar energy is examined. Included: the world's largest solar-thermal plant, at Kramer Junction in the Mojave Desert; solar-powered homes; and comments from Sarah Kurtz, who helped design the solar cell that's powering the Mars rovers.

Rating: TV-G

Saved by the Sun

The promise of solar energy is examined. Included: the world's largest solar-thermal plant, at Kramer Junction in the Mojave Desert; solar-powered homes; and comments from Sarah Kurtz, who helped design the solar cell that's powering the Mars rovers.

Rating: TV-G

Saved by the Sun

The promise of solar energy is examined. Included: the world's largest solar-thermal plant, at Kramer Junction in the Mojave Desert; solar-powered homes; and comments from Sarah Kurtz, who helped design the solar cell that's powering the Mars rovers.

Rating: TV-G

Saved by the Sun

The promise of solar energy is examined. Included: the world's largest solar-thermal plant, at Kramer Junction in the Mojave Desert; solar-powered homes; and comments from Sarah Kurtz, who helped design the solar cell that's powering the Mars rovers.

Rating: TV-G

Saved by the Sun

The promise of solar energy is examined. Included: the world's largest solar-thermal plant, at Kramer Junction in the Mojave Desert; solar-powered homes; and comments from Sarah Kurtz, who helped design the solar cell that's powering the Mars rovers.

Rating: TV-G

Becoming Human: Unearthing Our Earliest Ancestor

The conclusion of the "Becoming Human" series explores the roots of Homo sapiens, which are believed to stretch back some 200,000 years to southern Africa. The documentary details what may have led to the birth of the modern human.

Rating: TV-G

Becoming Human: Unearthing Our Earliest Ancestor

The conclusion of the "Becoming Human" series explores the roots of Homo sapiens, which are believed to stretch back some 200,000 years to southern Africa. The documentary details what may have led to the birth of the modern human.

Rating: TV-G

Becoming Human: Unearthing Our Earliest Ancestor

The conclusion of the "Becoming Human" series explores the roots of Homo sapiens, which are believed to stretch back some 200,000 years to southern Africa. The documentary details what may have led to the birth of the modern human.

Rating: TV-G

Becoming Human: Unearthing Our Earliest Ancestor

The conclusion of the "Becoming Human" series explores the roots of Homo sapiens, which are believed to stretch back some 200,000 years to southern Africa. The documentary details what may have led to the birth of the modern human.

Rating: TV-G

Becoming Human: Unearthing Our Earliest Ancestor

The conclusion of the "Becoming Human" series explores the roots of Homo sapiens, which are believed to stretch back some 200,000 years to southern Africa. The documentary details what may have led to the birth of the modern human.

Rating: TV-G

Becoming Human: Unearthing Our Earliest Ancestor

The conclusion of the "Becoming Human" series explores the roots of Homo sapiens, which are believed to stretch back some 200,000 years to southern Africa. The documentary details what may have led to the birth of the modern human.

Rating: TV-G

Becoming Human: Unearthing Our Earliest Ancestor

The conclusion of the "Becoming Human" series explores the roots of Homo sapiens, which are believed to stretch back some 200,000 years to southern Africa. The documentary details what may have led to the birth of the modern human.

Rating: TV-G

Becoming Human: Unearthing Our Earliest Ancestor

The conclusion of the "Becoming Human" series explores the roots of Homo sapiens, which are believed to stretch back some 200,000 years to southern Africa. The documentary details what may have led to the birth of the modern human.

Rating: TV-G

Becoming Human: Unearthing Our Earliest Ancestor

The conclusion of the "Becoming Human" series explores the roots of Homo sapiens, which are believed to stretch back some 200,000 years to southern Africa. The documentary details what may have led to the birth of the modern human.

Rating: TV-G

Becoming Human: Unearthing Our Earliest Ancestor

The conclusion of the "Becoming Human" series explores the roots of Homo sapiens, which are believed to stretch back some 200,000 years to southern Africa. The documentary details what may have led to the birth of the modern human.

Rating: TV-G

Becoming Human: Unearthing Our Earliest Ancestor

The conclusion of the "Becoming Human" series explores the roots of Homo sapiens, which are believed to stretch back some 200,000 years to southern Africa. The documentary details what may have led to the birth of the modern human.

Rating: TV-G

Becoming Human: Unearthing Our Earliest Ancestor

The conclusion of the "Becoming Human" series explores the roots of Homo sapiens, which are believed to stretch back some 200,000 years to southern Africa. The documentary details what may have led to the birth of the modern human.

Rating: TV-G

Becoming Human: Unearthing Our Earliest Ancestor

The conclusion of the "Becoming Human" series explores the roots of Homo sapiens, which are believed to stretch back some 200,000 years to southern Africa. The documentary details what may have led to the birth of the modern human.

Rating: TV-G