Take a look at research into plant benefits:

 Plants in Schools

• The Effect of Interior Planting on Health and Discomfort among Workers and School Children, Tove Fjeld

• Plants in the classroom can improve student performance, John Daly, Margaret Burchett and Fraser Torpy 

• The Impact of Interior Plants in University Classrooms on Student Course Performance and on Student Perceptions of the Course and Instructor, Jennifer S. Doxey, Tina Marie Waliczek, Jayne M. Zajicek 

• Interaction with indoor plants may reduce psychological and physiological stress by suppressing autonomic nervous system activity in young adults: a randomized crossover study. by Min-sun Lee, Juyoung Lee, Bum-Jin Park and Yoshifumi Miyazaki 

• Real Foliage Plants as Visual Stimuli to Improve Concentration and Attention in Elementary Students by Yun-Ah Oh,Seon-Ok Kim and Sin-Ae Park

Plants in Offices

• Interior Plants May Improve Worker Productivity and Reduce Stress in a  Windowless Environment, Virginia I. Lohr, Caroline H. Pearson-Mims, and Georgia K. Goodwin

• Potential of a Small Indoor Plant on the Desk for Reducing Office Workers’ Stress by Masahiro Toyoda, Yuko Yokota, Marni Barnes and Midori Kaneko

• Constructive Use of Vegetation in Office Buildings by P. Costa and R.W. James

• Healthy Workplaces: The Effects of Nature Contact at Work on Employee Stress and Health by Erin Largo-Wight, W. William Chen, Virginia Dodd and Robert Weiler

• People–Plant Interaction, The physiological, psychological and sociological effects of plants on people by Marjolein Elings

• The Positive Effects of Office Plants. Nursery Papers 

• The Relative Benefits of Green Versus Lean Office Space: Three Field Experiments. Craig Knight

• The effect of indoor plants on human comfort by Jun Qin, Chanjuan Sun, Xin Zhou, Hanbing Leng and Zhiwei Lian

• What Are the Benefits of Plants Indoors and Why Do We Respond Positively to Them?  by Virginia I. Lohr

• Human Response to Window Views and Indoor Plants in the Workplace by Chen-Yen Chang and Ping-Kun Chen

• Interaction with indoor plants may reduce psychological and physiological stress by suppressing autonomic nervous system activity in young adults: a randomized crossover study by Min-sun Lee,  Juyoung Lee, Bum-Jin Park, and Yoshifumi Miyazaki

• A review of green systems within the indoor environment, by Tatiana Armijos Moya, Andy van den Dobbelsteen, Marc Ottelé, Philomena M. Bluyssen

• Psychological Benefits of Indoor Plants in Workplaces: Putting Experimental Results into Context, by Tina Bringslimark , Terry Hartig  and Grete Grindal Patil

• Effects of Floral and Foliage Displays on Human Emotions, M. Adachi, C.L.E. Rohde, and A. D. Kendle

• Houseplants as home health monitors, C. Neal Stewart Jr, Rana K. Abudayyeh, Susan G. Stewart

• The restorative benefits of nature: Toward an integrative framework, Stephen Kaplan

• Does Plant Color Affect Emotional and Physiological Responses to Landscapes? A.J. Kaufman

• Psychological Benefits of Ornamental Plants Used in Office Environments by Anca Mariana Husti, Ioana Contju, Mălina Radu, Ioana Neacsu and Maria Cantor

• Exposure to Greenness and Mortality in a Nationwide Prospective Cohort Study of Women by Peter James, Jaime E. Hart, Rachel F. Banay and Francine Laden

• Healthy workplaces: plantscaping for indoor environmental quality. Smith A. Pitt M.

• Greening the Great Indoors for Human Health and Wellbeing by Margaret Burchett et al

• Indoor living plants’ effects on an office environment

• Indoor Plants Work

• Relationships between Plants, Behavior, and Attitudes in an Office Environment by Candice A. Shoemaker, Kim Randall, P. Diane Relf and E. Scott Geller

• Plants in the Workplace: The Effects of Plant Density on Productivity, Attitudes, and Perceptions by Larissa Larsen, Jeffrey Adams, Brian Deal, Byoung Suk Kweon, Elizabeth Tyler

• Effects of the foliage plant on task performance and mood by S Shibata, N Suzuki

• Effects of an indoor plant on creative task performance and mood by S Shibata, N Suzuki

• Interior plants may improve worker productivity and reduce stress in a windowless environment by VI Lohr, CH Pearson-Mims

• The Effect of Indoor Foliage Plants on Health and Discomfort Symptoms among Office Workers by T. Fjeld ,  B. Veiersted, L. Sandvik, G. Riise, F.  Levy

• Health Benefits from Nature Experiences Depend on Dose by Danielle F Shanahan

• Why We Need More Nature at Work: Effects of Natural Elements and Sunlight on Employee Mental Health and Work Attitudes by Mihyang An,Stephen M. Colarelli ,Kimberly O'Brien,Melanie E. Boyajian

Plants and Hospitals

• Effects of an Indoor Foliage Plant Intervention on Patient Well-being during a Residential Rehabilitation Program by Ruth Kjærsti Raanaas , Grete Grindal Patil and Terry Hartig

• Horticultural therapy in a psychiatric in-patient setting by Miguel de Seixas,David Williamson, Gemma Barker and Ruth Vickerstaff

• Health Benefits of Gardens in Hospitals by Roger S Ulrich

Indoor Air Pollution:

• Interior landscape plants for indoor air pollution abatement (NASA/ALCA Final Report) by B C Wolverton et al

• Removal of benzene by the indoor plant/substrate microcosm and implications for air quality by RL Orwell, RL Wood, J Tarran, F Torpy and Margaret Burchett

• Plants and soil microorganisms: removal of formaldehyde, xylene, and ammonia from the indoor environment by BC Wolverton, JD Wolverton

• The potted-plant microcosm substantially reduces indoor air VOC pollution: I. Office field-study by RA Wood, MD Burchett, R Alquezar, RL Orwell 

• The potted-plant microcosm substantially reduces indoor air VOC pollution: II. Laboratory study by RL Orwell, RA Wood, MD Burchett, J Tarran

• Foliage plants for removing indoor air pollutants from energy-efficient homes by BC Wolverton, RC McDonald, EA Watkins

• Particulate matter accumulation on horizontal surfaces in interiors: influence of foliage plants by VI Lohr, CH Pearson-Mims

• Screening indoor plants for volatile organic pollutant removal efficiency by DS Yang, SV Pennisi, KC Son, SJ Kays

• Efficiency of Volatile Formaldehyde Removal by Indoor Plants: Contribution of Aerial Plant Parts versus the Root Zone by Kwang Jin Kim , Mi Jung Kil, Jeong Seob Song, Eun Ha Yoo, Ki-Cheol Son  and Stanley J. Kays

• How and why potted plants really do clean indoor air by Dr Ronald Wood, Margaret Burchett et al

• Reducing Indoor Air Pollutants Through Horticultural Biotechnology by PJ Irga 

• Indoor Air Project, Part 1: Main Report; Indoor Air in Typical Australian Dwellings

• Indoor Air: "A product for concern"? by Ronald Wood

• Every breath we take: the lifelong impact of air pollution, Report of a working party

• Bench-study of green-wall plants for indoor air pollution reduction by Fraser Torpy,  Michael Zavattaro

• Removal of Benzene by the Indoor Plant/Substrate Microcosm and Implications of Air Quality, Ralph L. Orwell, Jane Tarran, Ronald L. Wood, Margaret D. Burchett

• Use of living pot-plants to cleanse indoor air – Research Review, Jane Tarran†, Fraser Torpy, and Margaret Burchett

• Reducing indoor air pollutants through horticultural biotechnology by PJ Irga & FR Torpy

• Foliage plants for removing indoor air pollutants from energy-efficient homes. Wolverton B.C. et al 

• A study of interior landscape plants for indoor air pollution abatement by Wolverton, B. C.; Douglas, Willard L.; Bounds, Keit

• Use of living pot-plants to cleanse indoor air Rough Guide to Sustainability by Brian Edwards with Paul Hyatt Environmental Supplement, The Guardian January 2000

• Removal efficiency and mechanisms of formaldehyde by five species of plants in air-plant-water system by Yuhong Su, Hanxiao Liang, Suya Zhao &Kaiyan Liu

• Characterization of microbial species in a regenerative bio-filter system for volatile organic compound removal by Wen-Hsuan Huang, Zhiqiang Wang, Geetika Choudhary, Beverly Guo, Jianshun Zhang &Dacheng Ren

• Potted-plant/growth media interactions and capacities for removal of volatiles from indoor air by R. A. Wood, R. L. Orwell, J. Tarran, F. Torpy &M. Burchett

• Evaluating Sources of Indoor Air Pollution by Bruce A. Tichenor, Leslie A. Sparks, James B. White & Merrill D. Jackson

• Could Houseplants Improve Indoor air quality in Schools? by P. N. Pegas, C. A. Alves, T. Nunes, E. F. Bate-Epey, M. Evtyugina &C. A. Pio

• Potted plants can remove the pollutant nitrogen dioxide indoors, published 17 February 2022
  https://link.springer.com/article/10.1007/s11869-022-01171-6

 Biophilia

• Biophilia by Edward O. Wilson

• Bringing Nature Indoors With Virtual Reality: Human Reponses to Biophilic Design in Buildings

• Biophilia: Does Visual Contact with Nature Impact on Health and Well-Being by Bjørn Grinde and Grete Grindal Patil 

• 14 Patterns OF Biophilic Design; Improving Health & Well-Being in the Built Environment

• Biophilia, Health, and Well-being by Judith Heerwagen

• The primate relationship with nature: Biophilia as a general pattern The primate relationship with nature: Biophilia as a general pattern by P Verbeek, FBM de Waal in Children and Nature Psychological, Sociocultural, and Evolutionary Investigations

•  Healthy nature healthy people: ‘contact with nature’ as an upstream health promotion intervention for populations Healthy nature healthy people: ‘contact with nature’ as an upstream health promotion intervention for populations  by Cecily Maller, Mardie Townsend, Anita Pryor, Peter Brown, Lawrence St Leger

• The Human Relation With Nature and Technological Nature by Peter H. Kahn, Jr., Rachel L. Severson, and Jolina H. Ruckert

•  The biophilia hypothesis and life in the 21st century: increasing mental health or increasing pathology?  by E Gullone

• Biophilic Design Patterns: Emerging Nature-Based Parameters for Health and Well-Being in the Built Environment by Catherine O. Ryan, William D Browning, Joseph O Clancy, Scott L Andrews, Namita B Kallianpurkar

• Building for Life: Designing and Understanding the Human-Nature Connection by By Stephen R. Kellert

• The Experience of Nature: A Psychological Perspective by Rachel Kaplan, Stephen Kaplan

• Planting Healthy by Rob McDonald et al

• Health Benefits from Nature Experiences Depend on Dose by Danielle F Shanahan et al

• Vitalizing effects of being outdoors and in nature by Richard M. Ryan a, Netta Weinstein, Jessey Bernstein, Kirk Warren Brown, Louis Mistretta, Maryle`ne Gagne´

• Green spaces and cognitive development in primary school children by Payam Dadvand et al

• Creativity in the Wild: Improving Creative Reasoning through Immersion in Natural Settings by DL Strayer et al

 Green Roofs:

• 40-second green roof views sustain attention: The role of micro-breaks in attention restoration by Kate E Lee

• Green Roofs as Urban Ecosystems: Ecological Structures, Functions, and Services by E Oberndorfer et al

• Quantifying air pollution removal by green roofs in Chicago by J Yang, Q Yu, P Gong

•  The role of extensive green roofs in sustainable development by KL Getter, DB Rowe

• Green roofs as a means of pollution abatement by DB Rowe

• Space for Urban Wildlife: Designing Green Roofs as Habitats in Switzerland

• Positive effects of vegetation: Urban heat island and green roofs by T. Susca, S.R. Gaffin, G.R. Dell’Osso

Green Walls

• Living walls–A way to Green the Built Environment by S Loh

• Aesthetics for Green Roofs and Green Walls by Richard K. Sutton

• Green Walls for a Restorative Classroom Environment: A Controlled Evaluation Study by Agnes E. van den Berg et al 

• Measurement of air flow through a green-wall module by P Abdo, BP Huynh, V Avakian, TT Nguyen,  J Gammon, FR Torpy, & PJ Irga 

• The in situ pilot-scale phytoremediation of airborne VOCs and particulate matter with an active green wall by T. Pettit P. J. IrgaF. R. Torpy