This episode introduces lions with distinct personalities and follows them as they hunt and explore new territories, but conflict arises when the mothers return with new cubs.

A student chronicles 2017's Hurricane Maria as it decimates Puerto Rico. A hailstorm destroys a Dallas family home. A wilderness hiker clings on for dear life in a flash flood.

A disturbing report from Cambodia of something in the water that's sliced cleanly through a young man's testicle sends Jeremy on a quest to expose an unseen mutilator.

Gary, Arlie and Damon rescue two gators - one near a restaurant and the other at an industrial equipment supplier - while the team gets Gator Country ready for the busiest day of the year.

Hunger drives the cubs to violence and family relationships are complicated; the lions rely on the more agile lionesses for hunting and face challenges such as climate change.

Jeremy searches in Alaska for an animal that could overpower an unsuspecting fisherman. Is there something in the river that fits the bill, or are large and surprisingly cold-water sharks to blame?

The Alaskans must take advantage of the migrating moose and fish, before the rivers freeze and winter sets. But caution is paramount, as they aren't the only ones looking for food in the Arctic.

Our journey begins in Berlin Grunewald. Along the way, we meet people who are passionate about nature. The journey ends with the Midsummer Festival in the Stockholm Archipelago.

As the ocean's hunters prowl the seas, each masters its own way of survival. Their strategies differ, but the same rules apply: Assess, adapt, act.

The Alaskans must take advantage of the migrating moose and fish, before the rivers freeze and winter sets. But caution is paramount, as they aren't the only ones looking for food in the Arctic.

North California is besieged by a spate of raging wildfires. In Costa Rica, a tourist pleasure boat capsizes and in North Carolina, a tornado hits a superstore packed with shoppers.

Jeremy searches in Alaska for an animal that could overpower an unsuspecting fisherman. Is there something in the river that fits the bill, or are large and surprisingly cold-water sharks to blame?

The Alaskans must take advantage of the migrating moose and fish, before the rivers freeze and winter sets. But caution is paramount, as they aren't the only ones looking for food in the Arctic.

Our journey begins in Berlin Grunewald. Along the way, we meet people who are passionate about nature. The journey ends with the Midsummer Festival in the Stockholm Archipelago.

Hunger drives the cubs to violence and family relationships are complicated; the lions rely on the more agile lionesses for hunting and face challenges such as climate change.

Tigerfish are Africa's most fearsome-looking fish, but are they man-eaters? Jeremy decides that the only way to get an answer is to offer himself as live bait, but he first has to get past the crocs...

To prepare for winter in the Arctic, the Alaskans must overcome challenges as they travel through unfamiliar territories. They must take advantage of the fall season by stockpiling resources.

The Vjosa River in Albania became Europe's first Wild River National Park in 2023. The significance of this title has reinforced how important river systems are to the lives of those who live near.

As the ocean's hunters prowl the seas, each masters its own way of survival. Their strategies differ, but the same rules apply: Assess, adapt, act.

To prepare for winter in the Arctic, the Alaskans must overcome challenges as they travel through unfamiliar territories. They must take advantage of the fall season by stockpiling resources.

North California is besieged by a spate of raging wildfires. In Costa Rica, a tourist pleasure boat capsizes and in North Carolina, a tornado hits a superstore packed with shoppers.

Tigerfish are Africa's most fearsome-looking fish, but are they man-eaters? Jeremy decides that the only way to get an answer is to offer himself as live bait, but he first has to get past the crocs...

Our journey begins in Berlin Grunewald. Along the way, we meet people who are passionate about nature. The journey ends with the Midsummer Festival in the Stockholm Archipelago.