简介：AccordingtotheUN,itispredictedthatthehumanpopulationcouldreachtenbillionpeoplebytheyear2050.ForbroadcasterandnaturalistChrisPackham,whohasdedicatedhislifetochampioningthenaturalworld,thesubjectofourgrowingpopulationandtheimpactitishavingonourplanetisoneofthemostvital–andoftenoverlooked–topicsofdiscussioninaneraofincreasingenvironmentalawareness. Chrisisworriedthataworldoftenbillionmaysimplybetoomanypeoplefortheearthtosustain,giventheimpact7.7billionhumansarealreadyhaving.Travellingaroundtheglobeinsearchofanswerstodifficultandsometimescontroversialquestions,Chrisinvestigateswhyourpopulationisgrowingsorapidly,whatimpactitishavingonthenaturalworld,andwhetherthereisanythingthatcanbedone. ChristravelstoBraziltodiscoveramegacityonthevergeofrunningoutofwaterandanindustryexpandingtofeedourgrowingnumbers–withdireconsequencesforbiodiversity.InNigeria,acountrysettobecomethethirdmostpopulousnationonearthby2050,overtakingtheUnitedStates,Chrisvisitsanextraordinarycommunitysurvivingagainsttheoddsandaschoolthatmightholdtheanswertoafuturefallinthebirthrate.BackhomeinBritain,ChrisinterviewsSirDavidAttenborough–likeChris,heisapatronofthecharityPopulationMatters.Chrisalsoexaminestheroleoffallingbirthratesaroundtheworld,theimpactofanagingpopulation,andmeetsacouplewhoarestrugglingtogetpregnantthroughIVF. Withinterviewsfromseveralpopulationexperts,Chris’sfocusultimatelyturnstotheimpactourlevelsofconsumptionarealreadyhaving,andaskswhethertheworldcanrebalancetoaccommodatetheneedsofovertwobillionmorepeople.…